diff --git a/docker-compose.yml b/docker-compose.yml
index 2368377b86..43d482625c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -414,6 +414,7 @@ services:
       - OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE
       - OTEL_RESOURCE_ATTRIBUTES
       - OTEL_SERVICE_NAME=paymentservice
+      - FEATURE_FLAG_GRPC_SERVICE_ADDR
     depends_on:
       otelcol:
         condition: service_started
diff --git a/pb/demo.proto b/pb/demo.proto
index 9012c62692..1e718626dc 100644
--- a/pb/demo.proto
+++ b/pb/demo.proto
@@ -276,6 +276,18 @@ service FeatureFlagService {
    */
   rpc EvaluateProbabilityFeatureFlag(EvaluateProbabilityFeatureFlagRequest) returns (EvaluateProbabilityFeatureFlagResponse) {}
 
+  /*
+   * A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+   * simulating increased request latencies in a service, the triplet of feature flags to be created would be
+   * - serviceNameSimulateSlowness: on/off switch or probability for the feature (value is >= 0 & <= 1),
+   * - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+   * - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+   * That is, the feature flag API assumes that there are additional feature flag values with the suffix "LowerBound" and
+   * "UpperBound" when a range feature flag with a particular name is requested. In case the feature is enabled, but one or both
+   * of lower/upper bound does not exist, the arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+   */
+  rpc GetRangeFeatureFlag(RangeFeatureFlagRequest) returns (RangeFeatureFlagResponse) {}
+
   /* Creates a new feature flag. */
   rpc CreateFlag(CreateFlagRequest) returns (CreateFlagResponse) {}
 
@@ -303,6 +315,18 @@ message EvaluateProbabilityFeatureFlagResponse {
   bool enabled = 1;
 }
 
+message RangeFeatureFlagRequest {
+  string name = 1;
+  string nameLowerBound = 2;
+  string nameUpperBound = 3;
+}
+
+message RangeFeatureFlagResponse {
+  bool enabled = 1;
+  float lowerBound = 2;
+  float upperBound = 3;
+}
+
 message GetFeatureFlagValueRequest {
   string name = 1;
 }
diff --git a/regenerate-grpc-code.sh b/regenerate-grpc-code.sh
index c50eb78b59..b01c8cfc5d 100755
--- a/regenerate-grpc-code.sh
+++ b/regenerate-grpc-code.sh
@@ -37,7 +37,6 @@ EOF
   exit 1
 }
 
-
 command -v protoc >/dev/null 2>&1 || {
   cat <<EOF >&2
 protoc needs to be installed but it isn't.
@@ -74,7 +73,7 @@ popd > /dev/null
 
 echo "Regenerating Java code in src/adservice based on demo.proto"
 pushd src/adservice > /dev/null
-./gradlew  generateProto
+./gradlew generateProto
 popd > /dev/null
 
 echo "Recompiling Erlang code in src/featureflagservice based on demo.proto"
diff --git a/src/accountingservice/genproto/oteldemo/demo.pb.go b/src/accountingservice/genproto/oteldemo/demo.pb.go
index 43c95c4c40..2424db4a23 100644
--- a/src/accountingservice/genproto/oteldemo/demo.pb.go
+++ b/src/accountingservice/genproto/oteldemo/demo.pb.go
@@ -1967,6 +1967,132 @@ func (x *EvaluateProbabilityFeatureFlagResponse) GetEnabled() bool {
 	return false
 }
 
+type RangeFeatureFlagRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name           string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	NameLowerBound string `protobuf:"bytes,2,opt,name=nameLowerBound,proto3" json:"nameLowerBound,omitempty"`
+	NameUpperBound string `protobuf:"bytes,3,opt,name=nameUpperBound,proto3" json:"nameUpperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagRequest) Reset() {
+	*x = RangeFeatureFlagRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagRequest) ProtoMessage() {}
+
+func (x *RangeFeatureFlagRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagRequest.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagRequest) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *RangeFeatureFlagRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameLowerBound() string {
+	if x != nil {
+		return x.NameLowerBound
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameUpperBound() string {
+	if x != nil {
+		return x.NameUpperBound
+	}
+	return ""
+}
+
+type RangeFeatureFlagResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Enabled    bool    `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	LowerBound float32 `protobuf:"fixed32,2,opt,name=lowerBound,proto3" json:"lowerBound,omitempty"`
+	UpperBound float32 `protobuf:"fixed32,3,opt,name=upperBound,proto3" json:"upperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagResponse) Reset() {
+	*x = RangeFeatureFlagResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagResponse) ProtoMessage() {}
+
+func (x *RangeFeatureFlagResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagResponse.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagResponse) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{36}
+}
+
+func (x *RangeFeatureFlagResponse) GetEnabled() bool {
+	if x != nil {
+		return x.Enabled
+	}
+	return false
+}
+
+func (x *RangeFeatureFlagResponse) GetLowerBound() float32 {
+	if x != nil {
+		return x.LowerBound
+	}
+	return 0
+}
+
+func (x *RangeFeatureFlagResponse) GetUpperBound() float32 {
+	if x != nil {
+		return x.UpperBound
+	}
+	return 0
+}
+
 type GetFeatureFlagValueRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1978,7 +2104,7 @@ type GetFeatureFlagValueRequest struct {
 func (x *GetFeatureFlagValueRequest) Reset() {
 	*x = GetFeatureFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[35]
+		mi := &file_demo_proto_msgTypes[37]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1991,7 +2117,7 @@ func (x *GetFeatureFlagValueRequest) String() string {
 func (*GetFeatureFlagValueRequest) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[35]
+	mi := &file_demo_proto_msgTypes[37]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2004,7 +2130,7 @@ func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{35}
+	return file_demo_proto_rawDescGZIP(), []int{37}
 }
 
 func (x *GetFeatureFlagValueRequest) GetName() string {
@@ -2025,7 +2151,7 @@ type GetFeatureFlagValueResponse struct {
 func (x *GetFeatureFlagValueResponse) Reset() {
 	*x = GetFeatureFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[36]
+		mi := &file_demo_proto_msgTypes[38]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2038,7 +2164,7 @@ func (x *GetFeatureFlagValueResponse) String() string {
 func (*GetFeatureFlagValueResponse) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[36]
+	mi := &file_demo_proto_msgTypes[38]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2051,7 +2177,7 @@ func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{36}
+	return file_demo_proto_rawDescGZIP(), []int{38}
 }
 
 func (x *GetFeatureFlagValueResponse) GetValue() float32 {
@@ -2074,7 +2200,7 @@ type CreateFlagRequest struct {
 func (x *CreateFlagRequest) Reset() {
 	*x = CreateFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[37]
+		mi := &file_demo_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2087,7 +2213,7 @@ func (x *CreateFlagRequest) String() string {
 func (*CreateFlagRequest) ProtoMessage() {}
 
 func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[37]
+	mi := &file_demo_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2100,7 +2226,7 @@ func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagRequest.ProtoReflect.Descriptor instead.
 func (*CreateFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{37}
+	return file_demo_proto_rawDescGZIP(), []int{39}
 }
 
 func (x *CreateFlagRequest) GetName() string {
@@ -2133,7 +2259,7 @@ type CreateFlagResponse struct {
 func (x *CreateFlagResponse) Reset() {
 	*x = CreateFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[38]
+		mi := &file_demo_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2146,7 +2272,7 @@ func (x *CreateFlagResponse) String() string {
 func (*CreateFlagResponse) ProtoMessage() {}
 
 func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[38]
+	mi := &file_demo_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2159,7 +2285,7 @@ func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagResponse.ProtoReflect.Descriptor instead.
 func (*CreateFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{38}
+	return file_demo_proto_rawDescGZIP(), []int{40}
 }
 
 type UpdateFlagValueRequest struct {
@@ -2174,7 +2300,7 @@ type UpdateFlagValueRequest struct {
 func (x *UpdateFlagValueRequest) Reset() {
 	*x = UpdateFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[39]
+		mi := &file_demo_proto_msgTypes[41]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2187,7 +2313,7 @@ func (x *UpdateFlagValueRequest) String() string {
 func (*UpdateFlagValueRequest) ProtoMessage() {}
 
 func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[39]
+	mi := &file_demo_proto_msgTypes[41]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2200,7 +2326,7 @@ func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{39}
+	return file_demo_proto_rawDescGZIP(), []int{41}
 }
 
 func (x *UpdateFlagValueRequest) GetName() string {
@@ -2226,7 +2352,7 @@ type UpdateFlagValueResponse struct {
 func (x *UpdateFlagValueResponse) Reset() {
 	*x = UpdateFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[40]
+		mi := &file_demo_proto_msgTypes[42]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2239,7 +2365,7 @@ func (x *UpdateFlagValueResponse) String() string {
 func (*UpdateFlagValueResponse) ProtoMessage() {}
 
 func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[40]
+	mi := &file_demo_proto_msgTypes[42]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2252,7 +2378,7 @@ func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{40}
+	return file_demo_proto_rawDescGZIP(), []int{42}
 }
 
 type ListFlagsRequest struct {
@@ -2264,7 +2390,7 @@ type ListFlagsRequest struct {
 func (x *ListFlagsRequest) Reset() {
 	*x = ListFlagsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[41]
+		mi := &file_demo_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2277,7 +2403,7 @@ func (x *ListFlagsRequest) String() string {
 func (*ListFlagsRequest) ProtoMessage() {}
 
 func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[41]
+	mi := &file_demo_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2290,7 +2416,7 @@ func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsRequest.ProtoReflect.Descriptor instead.
 func (*ListFlagsRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{41}
+	return file_demo_proto_rawDescGZIP(), []int{43}
 }
 
 type ListFlagsResponse struct {
@@ -2304,7 +2430,7 @@ type ListFlagsResponse struct {
 func (x *ListFlagsResponse) Reset() {
 	*x = ListFlagsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[42]
+		mi := &file_demo_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2317,7 +2443,7 @@ func (x *ListFlagsResponse) String() string {
 func (*ListFlagsResponse) ProtoMessage() {}
 
 func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[42]
+	mi := &file_demo_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2330,7 +2456,7 @@ func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsResponse.ProtoReflect.Descriptor instead.
 func (*ListFlagsResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{42}
+	return file_demo_proto_rawDescGZIP(), []int{44}
 }
 
 func (x *ListFlagsResponse) GetFlag() []*FlagDefinition {
@@ -2351,7 +2477,7 @@ type DeleteFlagRequest struct {
 func (x *DeleteFlagRequest) Reset() {
 	*x = DeleteFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[43]
+		mi := &file_demo_proto_msgTypes[45]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2364,7 +2490,7 @@ func (x *DeleteFlagRequest) String() string {
 func (*DeleteFlagRequest) ProtoMessage() {}
 
 func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[43]
+	mi := &file_demo_proto_msgTypes[45]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2377,7 +2503,7 @@ func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagRequest.ProtoReflect.Descriptor instead.
 func (*DeleteFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{43}
+	return file_demo_proto_rawDescGZIP(), []int{45}
 }
 
 func (x *DeleteFlagRequest) GetName() string {
@@ -2396,7 +2522,7 @@ type DeleteFlagResponse struct {
 func (x *DeleteFlagResponse) Reset() {
 	*x = DeleteFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[44]
+		mi := &file_demo_proto_msgTypes[46]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2409,7 +2535,7 @@ func (x *DeleteFlagResponse) String() string {
 func (*DeleteFlagResponse) ProtoMessage() {}
 
 func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[44]
+	mi := &file_demo_proto_msgTypes[46]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2422,7 +2548,7 @@ func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagResponse.ProtoReflect.Descriptor instead.
 func (*DeleteFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{44}
+	return file_demo_proto_rawDescGZIP(), []int{46}
 }
 
 var File_demo_proto protoreflect.FileDescriptor
@@ -2624,151 +2750,172 @@ var file_demo_proto_rawDesc = []byte{
 	0x74, 0x65, 0x50, 0x72, 0x6f, 0x62, 0x61, 0x62, 0x69, 0x6c, 0x69, 0x74, 0x79, 0x46, 0x65, 0x61,
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 }
 
 var (
@@ -2783,7 +2930,7 @@ func file_demo_proto_rawDescGZIP() []byte {
 	return file_demo_proto_rawDescData
 }
 
-var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 45)
+var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 47)
 var file_demo_proto_goTypes = []interface{}{
 	(*CartItem)(nil),                               // 0: oteldemo.CartItem
 	(*AddItemRequest)(nil),                         // 1: oteldemo.AddItemRequest
@@ -2820,16 +2967,18 @@ var file_demo_proto_goTypes = []interface{}{
 	(*FlagDefinition)(nil),                         // 32: oteldemo.FlagDefinition
 	(*EvaluateProbabilityFeatureFlagRequest)(nil),  // 33: oteldemo.EvaluateProbabilityFeatureFlagRequest
 	(*EvaluateProbabilityFeatureFlagResponse)(nil), // 34: oteldemo.EvaluateProbabilityFeatureFlagResponse
-	(*GetFeatureFlagValueRequest)(nil),             // 35: oteldemo.GetFeatureFlagValueRequest
-	(*GetFeatureFlagValueResponse)(nil),            // 36: oteldemo.GetFeatureFlagValueResponse
-	(*CreateFlagRequest)(nil),                      // 37: oteldemo.CreateFlagRequest
-	(*CreateFlagResponse)(nil),                     // 38: oteldemo.CreateFlagResponse
-	(*UpdateFlagValueRequest)(nil),                 // 39: oteldemo.UpdateFlagValueRequest
-	(*UpdateFlagValueResponse)(nil),                // 40: oteldemo.UpdateFlagValueResponse
-	(*ListFlagsRequest)(nil),                       // 41: oteldemo.ListFlagsRequest
-	(*ListFlagsResponse)(nil),                      // 42: oteldemo.ListFlagsResponse
-	(*DeleteFlagRequest)(nil),                      // 43: oteldemo.DeleteFlagRequest
-	(*DeleteFlagResponse)(nil),                     // 44: oteldemo.DeleteFlagResponse
+	(*RangeFeatureFlagRequest)(nil),                // 35: oteldemo.RangeFeatureFlagRequest
+	(*RangeFeatureFlagResponse)(nil),               // 36: oteldemo.RangeFeatureFlagResponse
+	(*GetFeatureFlagValueRequest)(nil),             // 37: oteldemo.GetFeatureFlagValueRequest
+	(*GetFeatureFlagValueResponse)(nil),            // 38: oteldemo.GetFeatureFlagValueResponse
+	(*CreateFlagRequest)(nil),                      // 39: oteldemo.CreateFlagRequest
+	(*CreateFlagResponse)(nil),                     // 40: oteldemo.CreateFlagResponse
+	(*UpdateFlagValueRequest)(nil),                 // 41: oteldemo.UpdateFlagValueRequest
+	(*UpdateFlagValueResponse)(nil),                // 42: oteldemo.UpdateFlagValueResponse
+	(*ListFlagsRequest)(nil),                       // 43: oteldemo.ListFlagsRequest
+	(*ListFlagsResponse)(nil),                      // 44: oteldemo.ListFlagsResponse
+	(*DeleteFlagRequest)(nil),                      // 45: oteldemo.DeleteFlagRequest
+	(*DeleteFlagResponse)(nil),                     // 46: oteldemo.DeleteFlagResponse
 }
 var file_demo_proto_depIdxs = []int32{
 	0,  // 0: oteldemo.AddItemRequest.item:type_name -> oteldemo.CartItem
@@ -2871,35 +3020,37 @@ var file_demo_proto_depIdxs = []int32{
 	26, // 36: oteldemo.EmailService.SendOrderConfirmation:input_type -> oteldemo.SendOrderConfirmationRequest
 	27, // 37: oteldemo.CheckoutService.PlaceOrder:input_type -> oteldemo.PlaceOrderRequest
 	29, // 38: oteldemo.AdService.GetAds:input_type -> oteldemo.AdRequest
-	35, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
+	37, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
 	33, // 40: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:input_type -> oteldemo.EvaluateProbabilityFeatureFlagRequest
-	37, // 41: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
-	39, // 42: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
-	41, // 43: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
-	43, // 44: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
-	5,  // 45: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
-	4,  // 46: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
-	5,  // 47: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
-	7,  // 48: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
-	9,  // 49: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
-	8,  // 50: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
-	12, // 51: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
-	14, // 52: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
-	16, // 53: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
-	19, // 54: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
-	18, // 55: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
-	23, // 56: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
-	5,  // 57: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
-	28, // 58: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
-	30, // 59: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
-	36, // 60: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
-	34, // 61: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
-	38, // 62: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
-	40, // 63: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
-	42, // 64: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
-	44, // 65: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
-	45, // [45:66] is the sub-list for method output_type
-	24, // [24:45] is the sub-list for method input_type
+	35, // 41: oteldemo.FeatureFlagService.GetRangeFeatureFlag:input_type -> oteldemo.RangeFeatureFlagRequest
+	39, // 42: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
+	41, // 43: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
+	43, // 44: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
+	45, // 45: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
+	5,  // 46: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
+	4,  // 47: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
+	5,  // 48: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
+	7,  // 49: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
+	9,  // 50: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
+	8,  // 51: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
+	12, // 52: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
+	14, // 53: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
+	16, // 54: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
+	19, // 55: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
+	18, // 56: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
+	23, // 57: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
+	5,  // 58: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
+	28, // 59: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
+	30, // 60: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
+	38, // 61: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
+	34, // 62: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
+	36, // 63: oteldemo.FeatureFlagService.GetRangeFeatureFlag:output_type -> oteldemo.RangeFeatureFlagResponse
+	40, // 64: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
+	42, // 65: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
+	44, // 66: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
+	46, // 67: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
+	46, // [46:68] is the sub-list for method output_type
+	24, // [24:46] is the sub-list for method input_type
 	24, // [24:24] is the sub-list for extension type_name
 	24, // [24:24] is the sub-list for extension extendee
 	0,  // [0:24] is the sub-list for field type_name
@@ -3332,7 +3483,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueRequest); i {
+			switch v := v.(*RangeFeatureFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3344,7 +3495,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueResponse); i {
+			switch v := v.(*RangeFeatureFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3356,7 +3507,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagRequest); i {
+			switch v := v.(*GetFeatureFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3368,7 +3519,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagResponse); i {
+			switch v := v.(*GetFeatureFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3380,7 +3531,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueRequest); i {
+			switch v := v.(*CreateFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3392,7 +3543,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueResponse); i {
+			switch v := v.(*CreateFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3404,7 +3555,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsRequest); i {
+			switch v := v.(*UpdateFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3416,7 +3567,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsResponse); i {
+			switch v := v.(*UpdateFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3428,7 +3579,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DeleteFlagRequest); i {
+			switch v := v.(*ListFlagsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3440,6 +3591,30 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListFlagsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteFlagRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteFlagResponse); i {
 			case 0:
 				return &v.state
@@ -3458,7 +3633,7 @@ func file_demo_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_demo_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   45,
+			NumMessages:   47,
 			NumExtensions: 0,
 			NumServices:   10,
 		},
diff --git a/src/accountingservice/genproto/oteldemo/demo_grpc.pb.go b/src/accountingservice/genproto/oteldemo/demo_grpc.pb.go
index 535279ca56..97a1dc6c40 100644
--- a/src/accountingservice/genproto/oteldemo/demo_grpc.pb.go
+++ b/src/accountingservice/genproto/oteldemo/demo_grpc.pb.go
@@ -1067,6 +1067,7 @@ var AdService_ServiceDesc = grpc.ServiceDesc{
 const (
 	FeatureFlagService_GetFeatureFlagValue_FullMethodName            = "/oteldemo.FeatureFlagService/GetFeatureFlagValue"
 	FeatureFlagService_EvaluateProbabilityFeatureFlag_FullMethodName = "/oteldemo.FeatureFlagService/EvaluateProbabilityFeatureFlag"
+	FeatureFlagService_GetRangeFeatureFlag_FullMethodName            = "/oteldemo.FeatureFlagService/GetRangeFeatureFlag"
 	FeatureFlagService_CreateFlag_FullMethodName                     = "/oteldemo.FeatureFlagService/CreateFlag"
 	FeatureFlagService_UpdateFlagValue_FullMethodName                = "/oteldemo.FeatureFlagService/UpdateFlagValue"
 	FeatureFlagService_ListFlags_FullMethodName                      = "/oteldemo.FeatureFlagService/ListFlags"
@@ -1084,6 +1085,15 @@ type FeatureFlagServiceClient interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(ctx context.Context, in *EvaluateProbabilityFeatureFlagRequest, opts ...grpc.CallOption) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1120,6 +1130,15 @@ func (c *featureFlagServiceClient) EvaluateProbabilityFeatureFlag(ctx context.Co
 	return out, nil
 }
 
+func (c *featureFlagServiceClient) GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error) {
+	out := new(RangeFeatureFlagResponse)
+	err := c.cc.Invoke(ctx, FeatureFlagService_GetRangeFeatureFlag_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *featureFlagServiceClient) CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error) {
 	out := new(CreateFlagResponse)
 	err := c.cc.Invoke(ctx, FeatureFlagService_CreateFlag_FullMethodName, in, out, opts...)
@@ -1167,6 +1186,15 @@ type FeatureFlagServiceServer interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1188,6 +1216,9 @@ func (UnimplementedFeatureFlagServiceServer) GetFeatureFlagValue(context.Context
 func (UnimplementedFeatureFlagServiceServer) EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method EvaluateProbabilityFeatureFlag not implemented")
 }
+func (UnimplementedFeatureFlagServiceServer) GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetRangeFeatureFlag not implemented")
+}
 func (UnimplementedFeatureFlagServiceServer) CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateFlag not implemented")
 }
@@ -1249,6 +1280,24 @@ func _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler(srv interface{},
 	return interceptor(ctx, in, info, handler)
 }
 
+func _FeatureFlagService_GetRangeFeatureFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RangeFeatureFlagRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: FeatureFlagService_GetRangeFeatureFlag_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, req.(*RangeFeatureFlagRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _FeatureFlagService_CreateFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(CreateFlagRequest)
 	if err := dec(in); err != nil {
@@ -1336,6 +1385,10 @@ var FeatureFlagService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "EvaluateProbabilityFeatureFlag",
 			Handler:    _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler,
 		},
+		{
+			MethodName: "GetRangeFeatureFlag",
+			Handler:    _FeatureFlagService_GetRangeFeatureFlag_Handler,
+		},
 		{
 			MethodName: "CreateFlag",
 			Handler:    _FeatureFlagService_CreateFlag_Handler,
diff --git a/src/checkoutservice/genproto/oteldemo/demo.pb.go b/src/checkoutservice/genproto/oteldemo/demo.pb.go
index f34d3b9986..e43670e84c 100644
--- a/src/checkoutservice/genproto/oteldemo/demo.pb.go
+++ b/src/checkoutservice/genproto/oteldemo/demo.pb.go
@@ -1967,6 +1967,132 @@ func (x *EvaluateProbabilityFeatureFlagResponse) GetEnabled() bool {
 	return false
 }
 
+type RangeFeatureFlagRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name           string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	NameLowerBound string `protobuf:"bytes,2,opt,name=nameLowerBound,proto3" json:"nameLowerBound,omitempty"`
+	NameUpperBound string `protobuf:"bytes,3,opt,name=nameUpperBound,proto3" json:"nameUpperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagRequest) Reset() {
+	*x = RangeFeatureFlagRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagRequest) ProtoMessage() {}
+
+func (x *RangeFeatureFlagRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagRequest.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagRequest) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *RangeFeatureFlagRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameLowerBound() string {
+	if x != nil {
+		return x.NameLowerBound
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameUpperBound() string {
+	if x != nil {
+		return x.NameUpperBound
+	}
+	return ""
+}
+
+type RangeFeatureFlagResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Enabled    bool    `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	LowerBound float32 `protobuf:"fixed32,2,opt,name=lowerBound,proto3" json:"lowerBound,omitempty"`
+	UpperBound float32 `protobuf:"fixed32,3,opt,name=upperBound,proto3" json:"upperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagResponse) Reset() {
+	*x = RangeFeatureFlagResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagResponse) ProtoMessage() {}
+
+func (x *RangeFeatureFlagResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagResponse.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagResponse) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{36}
+}
+
+func (x *RangeFeatureFlagResponse) GetEnabled() bool {
+	if x != nil {
+		return x.Enabled
+	}
+	return false
+}
+
+func (x *RangeFeatureFlagResponse) GetLowerBound() float32 {
+	if x != nil {
+		return x.LowerBound
+	}
+	return 0
+}
+
+func (x *RangeFeatureFlagResponse) GetUpperBound() float32 {
+	if x != nil {
+		return x.UpperBound
+	}
+	return 0
+}
+
 type GetFeatureFlagValueRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1978,7 +2104,7 @@ type GetFeatureFlagValueRequest struct {
 func (x *GetFeatureFlagValueRequest) Reset() {
 	*x = GetFeatureFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[35]
+		mi := &file_demo_proto_msgTypes[37]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1991,7 +2117,7 @@ func (x *GetFeatureFlagValueRequest) String() string {
 func (*GetFeatureFlagValueRequest) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[35]
+	mi := &file_demo_proto_msgTypes[37]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2004,7 +2130,7 @@ func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{35}
+	return file_demo_proto_rawDescGZIP(), []int{37}
 }
 
 func (x *GetFeatureFlagValueRequest) GetName() string {
@@ -2025,7 +2151,7 @@ type GetFeatureFlagValueResponse struct {
 func (x *GetFeatureFlagValueResponse) Reset() {
 	*x = GetFeatureFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[36]
+		mi := &file_demo_proto_msgTypes[38]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2038,7 +2164,7 @@ func (x *GetFeatureFlagValueResponse) String() string {
 func (*GetFeatureFlagValueResponse) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[36]
+	mi := &file_demo_proto_msgTypes[38]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2051,7 +2177,7 @@ func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{36}
+	return file_demo_proto_rawDescGZIP(), []int{38}
 }
 
 func (x *GetFeatureFlagValueResponse) GetValue() float32 {
@@ -2074,7 +2200,7 @@ type CreateFlagRequest struct {
 func (x *CreateFlagRequest) Reset() {
 	*x = CreateFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[37]
+		mi := &file_demo_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2087,7 +2213,7 @@ func (x *CreateFlagRequest) String() string {
 func (*CreateFlagRequest) ProtoMessage() {}
 
 func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[37]
+	mi := &file_demo_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2100,7 +2226,7 @@ func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagRequest.ProtoReflect.Descriptor instead.
 func (*CreateFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{37}
+	return file_demo_proto_rawDescGZIP(), []int{39}
 }
 
 func (x *CreateFlagRequest) GetName() string {
@@ -2133,7 +2259,7 @@ type CreateFlagResponse struct {
 func (x *CreateFlagResponse) Reset() {
 	*x = CreateFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[38]
+		mi := &file_demo_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2146,7 +2272,7 @@ func (x *CreateFlagResponse) String() string {
 func (*CreateFlagResponse) ProtoMessage() {}
 
 func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[38]
+	mi := &file_demo_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2159,7 +2285,7 @@ func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagResponse.ProtoReflect.Descriptor instead.
 func (*CreateFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{38}
+	return file_demo_proto_rawDescGZIP(), []int{40}
 }
 
 type UpdateFlagValueRequest struct {
@@ -2174,7 +2300,7 @@ type UpdateFlagValueRequest struct {
 func (x *UpdateFlagValueRequest) Reset() {
 	*x = UpdateFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[39]
+		mi := &file_demo_proto_msgTypes[41]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2187,7 +2313,7 @@ func (x *UpdateFlagValueRequest) String() string {
 func (*UpdateFlagValueRequest) ProtoMessage() {}
 
 func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[39]
+	mi := &file_demo_proto_msgTypes[41]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2200,7 +2326,7 @@ func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{39}
+	return file_demo_proto_rawDescGZIP(), []int{41}
 }
 
 func (x *UpdateFlagValueRequest) GetName() string {
@@ -2226,7 +2352,7 @@ type UpdateFlagValueResponse struct {
 func (x *UpdateFlagValueResponse) Reset() {
 	*x = UpdateFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[40]
+		mi := &file_demo_proto_msgTypes[42]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2239,7 +2365,7 @@ func (x *UpdateFlagValueResponse) String() string {
 func (*UpdateFlagValueResponse) ProtoMessage() {}
 
 func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[40]
+	mi := &file_demo_proto_msgTypes[42]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2252,7 +2378,7 @@ func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{40}
+	return file_demo_proto_rawDescGZIP(), []int{42}
 }
 
 type ListFlagsRequest struct {
@@ -2264,7 +2390,7 @@ type ListFlagsRequest struct {
 func (x *ListFlagsRequest) Reset() {
 	*x = ListFlagsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[41]
+		mi := &file_demo_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2277,7 +2403,7 @@ func (x *ListFlagsRequest) String() string {
 func (*ListFlagsRequest) ProtoMessage() {}
 
 func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[41]
+	mi := &file_demo_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2290,7 +2416,7 @@ func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsRequest.ProtoReflect.Descriptor instead.
 func (*ListFlagsRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{41}
+	return file_demo_proto_rawDescGZIP(), []int{43}
 }
 
 type ListFlagsResponse struct {
@@ -2304,7 +2430,7 @@ type ListFlagsResponse struct {
 func (x *ListFlagsResponse) Reset() {
 	*x = ListFlagsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[42]
+		mi := &file_demo_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2317,7 +2443,7 @@ func (x *ListFlagsResponse) String() string {
 func (*ListFlagsResponse) ProtoMessage() {}
 
 func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[42]
+	mi := &file_demo_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2330,7 +2456,7 @@ func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsResponse.ProtoReflect.Descriptor instead.
 func (*ListFlagsResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{42}
+	return file_demo_proto_rawDescGZIP(), []int{44}
 }
 
 func (x *ListFlagsResponse) GetFlag() []*FlagDefinition {
@@ -2351,7 +2477,7 @@ type DeleteFlagRequest struct {
 func (x *DeleteFlagRequest) Reset() {
 	*x = DeleteFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[43]
+		mi := &file_demo_proto_msgTypes[45]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2364,7 +2490,7 @@ func (x *DeleteFlagRequest) String() string {
 func (*DeleteFlagRequest) ProtoMessage() {}
 
 func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[43]
+	mi := &file_demo_proto_msgTypes[45]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2377,7 +2503,7 @@ func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagRequest.ProtoReflect.Descriptor instead.
 func (*DeleteFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{43}
+	return file_demo_proto_rawDescGZIP(), []int{45}
 }
 
 func (x *DeleteFlagRequest) GetName() string {
@@ -2396,7 +2522,7 @@ type DeleteFlagResponse struct {
 func (x *DeleteFlagResponse) Reset() {
 	*x = DeleteFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[44]
+		mi := &file_demo_proto_msgTypes[46]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2409,7 +2535,7 @@ func (x *DeleteFlagResponse) String() string {
 func (*DeleteFlagResponse) ProtoMessage() {}
 
 func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[44]
+	mi := &file_demo_proto_msgTypes[46]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2422,7 +2548,7 @@ func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagResponse.ProtoReflect.Descriptor instead.
 func (*DeleteFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{44}
+	return file_demo_proto_rawDescGZIP(), []int{46}
 }
 
 var File_demo_proto protoreflect.FileDescriptor
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 }
 
 var (
@@ -2783,7 +2930,7 @@ func file_demo_proto_rawDescGZIP() []byte {
 	return file_demo_proto_rawDescData
 }
 
-var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 45)
+var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 47)
 var file_demo_proto_goTypes = []interface{}{
 	(*CartItem)(nil),                               // 0: oteldemo.CartItem
 	(*AddItemRequest)(nil),                         // 1: oteldemo.AddItemRequest
@@ -2820,16 +2967,18 @@ var file_demo_proto_goTypes = []interface{}{
 	(*FlagDefinition)(nil),                         // 32: oteldemo.FlagDefinition
 	(*EvaluateProbabilityFeatureFlagRequest)(nil),  // 33: oteldemo.EvaluateProbabilityFeatureFlagRequest
 	(*EvaluateProbabilityFeatureFlagResponse)(nil), // 34: oteldemo.EvaluateProbabilityFeatureFlagResponse
-	(*GetFeatureFlagValueRequest)(nil),             // 35: oteldemo.GetFeatureFlagValueRequest
-	(*GetFeatureFlagValueResponse)(nil),            // 36: oteldemo.GetFeatureFlagValueResponse
-	(*CreateFlagRequest)(nil),                      // 37: oteldemo.CreateFlagRequest
-	(*CreateFlagResponse)(nil),                     // 38: oteldemo.CreateFlagResponse
-	(*UpdateFlagValueRequest)(nil),                 // 39: oteldemo.UpdateFlagValueRequest
-	(*UpdateFlagValueResponse)(nil),                // 40: oteldemo.UpdateFlagValueResponse
-	(*ListFlagsRequest)(nil),                       // 41: oteldemo.ListFlagsRequest
-	(*ListFlagsResponse)(nil),                      // 42: oteldemo.ListFlagsResponse
-	(*DeleteFlagRequest)(nil),                      // 43: oteldemo.DeleteFlagRequest
-	(*DeleteFlagResponse)(nil),                     // 44: oteldemo.DeleteFlagResponse
+	(*RangeFeatureFlagRequest)(nil),                // 35: oteldemo.RangeFeatureFlagRequest
+	(*RangeFeatureFlagResponse)(nil),               // 36: oteldemo.RangeFeatureFlagResponse
+	(*GetFeatureFlagValueRequest)(nil),             // 37: oteldemo.GetFeatureFlagValueRequest
+	(*GetFeatureFlagValueResponse)(nil),            // 38: oteldemo.GetFeatureFlagValueResponse
+	(*CreateFlagRequest)(nil),                      // 39: oteldemo.CreateFlagRequest
+	(*CreateFlagResponse)(nil),                     // 40: oteldemo.CreateFlagResponse
+	(*UpdateFlagValueRequest)(nil),                 // 41: oteldemo.UpdateFlagValueRequest
+	(*UpdateFlagValueResponse)(nil),                // 42: oteldemo.UpdateFlagValueResponse
+	(*ListFlagsRequest)(nil),                       // 43: oteldemo.ListFlagsRequest
+	(*ListFlagsResponse)(nil),                      // 44: oteldemo.ListFlagsResponse
+	(*DeleteFlagRequest)(nil),                      // 45: oteldemo.DeleteFlagRequest
+	(*DeleteFlagResponse)(nil),                     // 46: oteldemo.DeleteFlagResponse
 }
 var file_demo_proto_depIdxs = []int32{
 	0,  // 0: oteldemo.AddItemRequest.item:type_name -> oteldemo.CartItem
@@ -2871,35 +3020,37 @@ var file_demo_proto_depIdxs = []int32{
 	26, // 36: oteldemo.EmailService.SendOrderConfirmation:input_type -> oteldemo.SendOrderConfirmationRequest
 	27, // 37: oteldemo.CheckoutService.PlaceOrder:input_type -> oteldemo.PlaceOrderRequest
 	29, // 38: oteldemo.AdService.GetAds:input_type -> oteldemo.AdRequest
-	35, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
+	37, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
 	33, // 40: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:input_type -> oteldemo.EvaluateProbabilityFeatureFlagRequest
-	37, // 41: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
-	39, // 42: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
-	41, // 43: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
-	43, // 44: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
-	5,  // 45: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
-	4,  // 46: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
-	5,  // 47: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
-	7,  // 48: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
-	9,  // 49: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
-	8,  // 50: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
-	12, // 51: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
-	14, // 52: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
-	16, // 53: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
-	19, // 54: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
-	18, // 55: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
-	23, // 56: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
-	5,  // 57: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
-	28, // 58: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
-	30, // 59: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
-	36, // 60: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
-	34, // 61: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
-	38, // 62: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
-	40, // 63: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
-	42, // 64: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
-	44, // 65: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
-	45, // [45:66] is the sub-list for method output_type
-	24, // [24:45] is the sub-list for method input_type
+	35, // 41: oteldemo.FeatureFlagService.GetRangeFeatureFlag:input_type -> oteldemo.RangeFeatureFlagRequest
+	39, // 42: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
+	41, // 43: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
+	43, // 44: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
+	45, // 45: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
+	5,  // 46: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
+	4,  // 47: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
+	5,  // 48: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
+	7,  // 49: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
+	9,  // 50: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
+	8,  // 51: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
+	12, // 52: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
+	14, // 53: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
+	16, // 54: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
+	19, // 55: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
+	18, // 56: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
+	23, // 57: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
+	5,  // 58: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
+	28, // 59: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
+	30, // 60: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
+	38, // 61: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
+	34, // 62: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
+	36, // 63: oteldemo.FeatureFlagService.GetRangeFeatureFlag:output_type -> oteldemo.RangeFeatureFlagResponse
+	40, // 64: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
+	42, // 65: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
+	44, // 66: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
+	46, // 67: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
+	46, // [46:68] is the sub-list for method output_type
+	24, // [24:46] is the sub-list for method input_type
 	24, // [24:24] is the sub-list for extension type_name
 	24, // [24:24] is the sub-list for extension extendee
 	0,  // [0:24] is the sub-list for field type_name
@@ -3332,7 +3483,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueRequest); i {
+			switch v := v.(*RangeFeatureFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3344,7 +3495,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueResponse); i {
+			switch v := v.(*RangeFeatureFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3356,7 +3507,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagRequest); i {
+			switch v := v.(*GetFeatureFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3368,7 +3519,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagResponse); i {
+			switch v := v.(*GetFeatureFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3380,7 +3531,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueRequest); i {
+			switch v := v.(*CreateFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3392,7 +3543,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueResponse); i {
+			switch v := v.(*CreateFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3404,7 +3555,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsRequest); i {
+			switch v := v.(*UpdateFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3416,7 +3567,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsResponse); i {
+			switch v := v.(*UpdateFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3428,7 +3579,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DeleteFlagRequest); i {
+			switch v := v.(*ListFlagsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3440,6 +3591,30 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListFlagsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteFlagRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteFlagResponse); i {
 			case 0:
 				return &v.state
@@ -3458,7 +3633,7 @@ func file_demo_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_demo_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   45,
+			NumMessages:   47,
 			NumExtensions: 0,
 			NumServices:   10,
 		},
diff --git a/src/checkoutservice/genproto/oteldemo/demo_grpc.pb.go b/src/checkoutservice/genproto/oteldemo/demo_grpc.pb.go
index 535279ca56..97a1dc6c40 100644
--- a/src/checkoutservice/genproto/oteldemo/demo_grpc.pb.go
+++ b/src/checkoutservice/genproto/oteldemo/demo_grpc.pb.go
@@ -1067,6 +1067,7 @@ var AdService_ServiceDesc = grpc.ServiceDesc{
 const (
 	FeatureFlagService_GetFeatureFlagValue_FullMethodName            = "/oteldemo.FeatureFlagService/GetFeatureFlagValue"
 	FeatureFlagService_EvaluateProbabilityFeatureFlag_FullMethodName = "/oteldemo.FeatureFlagService/EvaluateProbabilityFeatureFlag"
+	FeatureFlagService_GetRangeFeatureFlag_FullMethodName            = "/oteldemo.FeatureFlagService/GetRangeFeatureFlag"
 	FeatureFlagService_CreateFlag_FullMethodName                     = "/oteldemo.FeatureFlagService/CreateFlag"
 	FeatureFlagService_UpdateFlagValue_FullMethodName                = "/oteldemo.FeatureFlagService/UpdateFlagValue"
 	FeatureFlagService_ListFlags_FullMethodName                      = "/oteldemo.FeatureFlagService/ListFlags"
@@ -1084,6 +1085,15 @@ type FeatureFlagServiceClient interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(ctx context.Context, in *EvaluateProbabilityFeatureFlagRequest, opts ...grpc.CallOption) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1120,6 +1130,15 @@ func (c *featureFlagServiceClient) EvaluateProbabilityFeatureFlag(ctx context.Co
 	return out, nil
 }
 
+func (c *featureFlagServiceClient) GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error) {
+	out := new(RangeFeatureFlagResponse)
+	err := c.cc.Invoke(ctx, FeatureFlagService_GetRangeFeatureFlag_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *featureFlagServiceClient) CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error) {
 	out := new(CreateFlagResponse)
 	err := c.cc.Invoke(ctx, FeatureFlagService_CreateFlag_FullMethodName, in, out, opts...)
@@ -1167,6 +1186,15 @@ type FeatureFlagServiceServer interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1188,6 +1216,9 @@ func (UnimplementedFeatureFlagServiceServer) GetFeatureFlagValue(context.Context
 func (UnimplementedFeatureFlagServiceServer) EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method EvaluateProbabilityFeatureFlag not implemented")
 }
+func (UnimplementedFeatureFlagServiceServer) GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetRangeFeatureFlag not implemented")
+}
 func (UnimplementedFeatureFlagServiceServer) CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateFlag not implemented")
 }
@@ -1249,6 +1280,24 @@ func _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler(srv interface{},
 	return interceptor(ctx, in, info, handler)
 }
 
+func _FeatureFlagService_GetRangeFeatureFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RangeFeatureFlagRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: FeatureFlagService_GetRangeFeatureFlag_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, req.(*RangeFeatureFlagRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _FeatureFlagService_CreateFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(CreateFlagRequest)
 	if err := dec(in); err != nil {
@@ -1336,6 +1385,10 @@ var FeatureFlagService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "EvaluateProbabilityFeatureFlag",
 			Handler:    _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler,
 		},
+		{
+			MethodName: "GetRangeFeatureFlag",
+			Handler:    _FeatureFlagService_GetRangeFeatureFlag_Handler,
+		},
 		{
 			MethodName: "CreateFlag",
 			Handler:    _FeatureFlagService_CreateFlag_Handler,
diff --git a/src/featureflagservice/src/ffs_service.erl b/src/featureflagservice/src/ffs_service.erl
index c062acd85e..e06f97e110 100644
--- a/src/featureflagservice/src/ffs_service.erl
+++ b/src/featureflagservice/src/ffs_service.erl
@@ -16,8 +16,9 @@
 
 -behaviour(ffs_service_bhvr).
 
--export([evaluate_probability_feature_flag/2,
-  get_feature_flag_value/2,
+-export([get_feature_flag_value/2,
+  evaluate_probability_feature_flag/2,
+  get_range_feature_flag/2,
   create_flag/2,
   update_flag_value/2,
   list_flags/2,
@@ -37,9 +38,7 @@ get_feature_flag_value(Ctx, #{name := Name}) ->
       % deployment of the demo immediately sets them.
       {ok, #{value => 0.0}, Ctx};
 
-    #{'__struct__' := 'Elixir.Featureflagservice.FeatureFlags.FeatureFlag',
-      enabled := Value
-    } ->
+    #{ enabled := Value } ->
 
       ?set_attribute('app.featureflag.name', Name),
       ?set_attribute('app.featureflag.raw_value', Value),
@@ -61,14 +60,12 @@ evaluate_probability_feature_flag(Ctx, #{name := Name}) ->
       % deployment of the demo immediately sets them.
       {ok, #{enabled => false}, Ctx};
 
-    #{'__struct__' := 'Elixir.Featureflagservice.FeatureFlags.FeatureFlag',
-      enabled := RawValue
-    } ->
+    #{ enabled := EnabledRaw } ->
       RandomNumber = rand:uniform(),
-      FlagEnabledValue = RandomNumber =< RawValue,
+      FlagEnabledValue = RandomNumber =< EnabledRaw,
 
       ?set_attribute('app.featureflag.name', Name),
-      ?set_attribute('app.featureflag.raw_value', RawValue),
+      ?set_attribute('app.featureflag.raw_value', EnabledRaw),
       ?set_attribute('app.featureflag.enabled', FlagEnabledValue),
 
       {ok, #{enabled => FlagEnabledValue}, Ctx};
@@ -78,6 +75,52 @@ evaluate_probability_feature_flag(Ctx, #{name := Name}) ->
 
   end.
 
+-spec get_range_feature_flag(ctx:t(), ffs_demo_pb:get_range_feature_flag_request()) ->
+  {ok, ffs_demo_pb:get_range_feature_flag_response(), ctx:t()} | grpcbox_stream:grpc_error_response().
+get_range_feature_flag(Ctx, #{name := Name, nameLowerBound := NameLowerBound, nameUpperBound := NameUpperBound }) ->
+  EnabledFlag = 'Elixir.Featureflagservice.FeatureFlags':get_feature_flag_by_name(Name),
+  case EnabledFlag of
+    nil ->
+      % Do not fail with a GRPC error when feature flag has not been configured, instead just return false.
+      % This allows services to seamlessly introduce new feature flags without requiring that every
+      % deployment of the demo immediately sets them.
+      {ok, #{enabled => false, lowerBound => 0, upperBound => 0}, Ctx};
+
+    #{ enabled := EnabledRaw } ->
+      RandomNumber = rand:uniform(),
+      FlagEnabledValue = RandomNumber =< EnabledRaw,
+
+      ?set_attribute('app.featureflag.name', Name),
+      ?set_attribute('app.featureflag.raw_value', EnabledRaw),
+      ?set_attribute('app.featureflag.enabled', FlagEnabledValue),
+
+      if
+        FlagEnabledValue ->
+          LowerBound = 'Elixir.Featureflagservice.FeatureFlags':get_feature_flag_by_name(NameLowerBound),
+          UpperBound = 'Elixir.Featureflagservice.FeatureFlags':get_feature_flag_by_name(NameUpperBound),
+          LowerBoundDefault = 0,
+          UpperBoundDefault = 1000,
+          case {LowerBound, UpperBound} of
+            {#{ enabled := RawValueLowerBound }, #{ enabled := RawValueUpperBound }} ->
+              {ok, #{enabled => FlagEnabledValue, lowerBound => RawValueLowerBound, upperBound => RawValueUpperBound}, Ctx};
+            {#{ enabled := RawValueLowerBound }, _} ->
+              {ok, #{enabled => FlagEnabledValue, lowerBound => RawValueLowerBound, upperBound => UpperBoundDefault}, Ctx};
+            {_, #{ enabled := RawValueUpperBound }} ->
+              {ok, #{enabled => FlagEnabledValue, lowerBound => LowerBoundDefault, upperBound => RawValueUpperBound}, Ctx};
+            _ ->
+              {ok, #{enabled => FlagEnabledValue, lowerBound => LowerBoundDefault, upperBound => UpperBoundDefault}, Ctx}
+          end;
+
+        true ->
+          % flag is not enabled
+          {ok, #{enabled => false, lowerBound => 0, upperBound => 0}, Ctx}
+      end;
+
+    _ ->
+      {grpc_error, {?GRPC_STATUS_INTERNAL, <<"unexpected response from get_feature_flag_by_name">>}}
+
+  end.
+
 -spec create_flag(ctx:t(), ffs_demo_pb:create_flag_request()) ->
   {ok, ffs_demo_pb:create_flag_response(), ctx:t()} | grpcbox_stream:grpc_error_response().
 create_flag(Ctx, Flag) ->
@@ -137,7 +180,7 @@ list_flags(Ctx, _) ->
 
 unpack_flag(Flag) ->
   case Flag of
-    #{'__struct__' := 'Elixir.Featureflagservice.FeatureFlags.FeatureFlag',
+    #{
       name := Name,
       description := Description,
       enabled := Value
diff --git a/src/frontend/gateways/rpc/FeatureFlag.gateway.ts b/src/frontend/gateways/rpc/FeatureFlag.gateway.ts
index 436bec4780..537575681d 100644
--- a/src/frontend/gateways/rpc/FeatureFlag.gateway.ts
+++ b/src/frontend/gateways/rpc/FeatureFlag.gateway.ts
@@ -28,6 +28,16 @@ const FeatureFlagGateway = () => ({
         );
     },
 
+    getRangeFeatureFlag(name: string) {
+        return new Promise<EvaluateProbabilityFeatureFlagResponse>((resolve, reject) =>
+            client.getRangeFeatureFlag({
+                name,
+                nameLowerBound: `${name}LowerBound`,
+                nameUpperBound: `${name}UpperBound`
+            }, (error, response) => (error ? reject(error) : resolve(response)))
+        );
+    },
+
     createFlag(flag: CreateFlagRequest) {
         return new Promise<CreateFlagResponse>((resolve, reject) =>
             client.createFlag(flag, (error, response) => (error ? reject(error) : resolve(response)))
diff --git a/src/frontend/pages/api/featureflags/[name]/index.ts b/src/frontend/pages/api/featureflags/[name]/index.ts
index ee2d66822f..ca8ca83c86 100644
--- a/src/frontend/pages/api/featureflags/[name]/index.ts
+++ b/src/frontend/pages/api/featureflags/[name]/index.ts
@@ -15,13 +15,19 @@ type TResponse = Empty | GetFeatureFlagValueResponse | EvaluateProbabilityFeatur
 const handler = async ({method, query, body}: NextApiRequest, res: NextApiResponse<TResponse>) => {
     switch (method) {
         case 'GET': {
-            const {name = '', raw = ''} = query
-            if (raw && 'true' === (raw as string).toLowerCase()) {
-                const flag = await FeatureFlagGateway.getFeatureFlagValue(name as string);
-                return res.status(200).json(flag);
-            } else {
-                const flag = await FeatureFlagGateway.evaluateProbabilityFeatureFlag(name as string);
-                return res.status(200).json(flag);
+            const {name = '', mode = 'raw'} = query
+            switch (mode as string) {
+                case 'probability':
+                    const randomDecisionOutcome = await FeatureFlagGateway.evaluateProbabilityFeatureFlag(name as string);
+                    return res.status(200).json(randomDecisionOutcome);
+                case 'range':
+                    const range = await FeatureFlagGateway.getRangeFeatureFlag(name as string);
+                    return res.status(200).json(range);
+                case 'raw':
+                // fall through
+                default:
+                    const flag = await FeatureFlagGateway.getFeatureFlagValue(name as string);
+                    return res.status(200).json(flag);
             }
         }
 
@@ -30,7 +36,7 @@ const handler = async ({method, query, body}: NextApiRequest, res: NextApiRespon
             if (!name || Array.isArray(name)) {
                 return res.status(400).end()
             }
-            if (!body || typeof body.value !== 'number'){
+            if (!body || typeof body.value !== 'number') {
                 return res.status(400).end()
             }
             const updateFlagProbabilityRequest = body as UpdateFlagValueRequest;
diff --git a/src/frontend/pages/api/featureflags/index.ts b/src/frontend/pages/api/featureflags/index.ts
index 23b5691a81..17c9186279 100644
--- a/src/frontend/pages/api/featureflags/index.ts
+++ b/src/frontend/pages/api/featureflags/index.ts
@@ -10,9 +10,12 @@ type TResponse = FlagDefinition[] | FlagDefinition | Empty;
 const handler = async ({method, body}: NextApiRequest, res: NextApiResponse<TResponse>) => {
     switch (method) {
         case 'POST': {
-            if (!body || typeof body.name !== 'string' || typeof body.description !== 'string' || typeof body.value !== 'number') {
+            if (!body || typeof body.name !== 'string' || typeof body.value !== 'number') {
                 return res.status(400).end()
             }
+            if (!body.description) {
+                body.description = '-';
+            }
             const flagFromRequest = body as CreateFlagRequest
             await FeatureFlagGateway.createFlag(flagFromRequest);
             return res.status(204).end();
diff --git a/src/paymentservice/.prettierignore b/src/paymentservice/.prettierignore
new file mode 100644
index 0000000000..8068e91277
--- /dev/null
+++ b/src/paymentservice/.prettierignore
@@ -0,0 +1,2 @@
+*.yaml
+*.md
diff --git a/src/paymentservice/.prettierrc b/src/paymentservice/.prettierrc
new file mode 100644
index 0000000000..0c215aa897
--- /dev/null
+++ b/src/paymentservice/.prettierrc
@@ -0,0 +1,6 @@
+{
+	"tabWidth": 2,
+	"useTabs": false,
+	"semi": false,
+	"singleQuote": true,
+}
diff --git a/src/paymentservice/index.js b/src/paymentservice/index.js
index 8f95e61fce..e5ecf5bf04 100644
--- a/src/paymentservice/index.js
+++ b/src/paymentservice/index.js
@@ -1,5 +1,8 @@
+'use strict'
+
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
+const { callbackify, promisify } = require('util')
 const grpc = require('@grpc/grpc-js')
 const protoLoader = require('@grpc/proto-loader')
 const health = require('grpc-js-health-check')
@@ -8,52 +11,106 @@ const opentelemetry = require('@opentelemetry/api')
 const charge = require('./charge')
 const logger = require('./logger')
 
-function chargeServiceHandler(call, callback) {
-  const span = opentelemetry.trace.getActiveSpan();
+const otelDemoPackage = grpc.loadPackageDefinition(
+  protoLoader.loadSync('demo.proto')
+)
+
+const featureFlagServiceClient = initFeatureFlagClient()
+const getPaymentServiceSimulateSlowness = featureFlagServiceClient
+  ? promisify(featureFlagServiceClient.getRangeFeatureFlag.bind(featureFlagServiceClient))
+  : null
+
+async function chargeServiceHandler(call) {
+  const span = opentelemetry.trace.getActiveSpan()
 
   try {
     const amount = call.request.amount
     span.setAttributes({
       'app.payment.amount': parseFloat(`${amount.units}.${amount.nanos}`)
     })
-    logger.info({ request: call.request }, "Charge request received.")
-
-    const response = charge.charge(call.request)
-    callback(null, response)
+    logger.info({ request: call.request }, 'Charge request received.')
+    await simulateSlowness(span);
 
+    return charge.charge(call.request)
   } catch (err) {
     logger.warn({ err })
 
     span.recordException(err)
     span.setStatus({ code: opentelemetry.SpanStatusCode.ERROR })
 
-    callback(err)
+    throw err
+  }
+}
+
+async function simulateSlowness(span) {
+  if (getPaymentServiceSimulateSlowness) {
+    try {
+      const simulateSlownessResponse = await getPaymentServiceSimulateSlowness({
+        name: 'paymentServiceSimulateSlowness',
+        nameLowerBound: 'paymentServiceSimulateSlownessLowerBound',
+        nameUpperBound: 'paymentServiceSimulateSlownessUpperBound'
+      })
+      if (simulateSlownessResponse.enabled) {
+        const minimumDelayResponse = simulateSlownessResponse.lowerBound || 0
+        const maximumDelayResponse = simulateSlownessResponse.upperBound || 500
+        const delayMillis =
+            minimumDelayResponse +
+            Math.floor(Math.random() * (maximumDelayResponse - minimumDelayResponse))
+        logger.debug('Simulating payment service slowness, waiting %d.', delayMillis)
+        span.setAttributes({ 'app.payment.simulatedSlowness': delayMillis })
+        await new Promise((resolve) => setTimeout(resolve, delayMillis))
+      }
+    } catch (err) {
+      logger.warn({err: err})
+    }
   }
 }
 
 async function closeGracefully(signal) {
+  featureFlagServiceClient.close()
   server.forceShutdown()
   process.kill(process.pid, signal)
 }
 
-const otelDemoPackage = grpc.loadPackageDefinition(protoLoader.loadSync('demo.proto'))
 const server = new grpc.Server()
 
-server.addService(health.service, new health.Implementation({
-  '': health.servingStatus.SERVING
-}))
+server.addService(
+  health.service,
+  new health.Implementation({
+    '': health.servingStatus.SERVING,
+  })
+)
+
+server.addService(otelDemoPackage.oteldemo.PaymentService.service, {
+  charge: callbackify(chargeServiceHandler),
+})
 
-server.addService(otelDemoPackage.oteldemo.PaymentService.service, { charge: chargeServiceHandler })
+server.bindAsync(
+  `0.0.0.0:${process.env['PAYMENT_SERVICE_PORT']}`,
+  grpc.ServerCredentials.createInsecure(),
+  (err, port) => {
+    if (err) {
+      return logger.error({ err })
+    }
 
-server.bindAsync(`0.0.0.0:${process.env['PAYMENT_SERVICE_PORT']}`, grpc.ServerCredentials.createInsecure(), (err, port) => {
-  if (err) {
-    return logger.error({ err })
+    logger.info(`PaymentService gRPC server started on port ${port}`)
+    server.start()
   }
+)
 
-  logger.info(`PaymentService gRPC server started on port ${port}`)
-  server.start()
+function initFeatureFlagClient() {
+  const featureFlagServiceAddress = process.env.FEATURE_FLAG_GRPC_SERVICE_ADDR
+  if (!featureFlagServiceAddress) {
+    logger.warn(
+      'The feature flag service address is not set (FEATURE_FLAG_GRPC_SERVICE_ADDR). No artificial request duration variance will be introduced.'
+    )
+    return null
+  }
+  return new otelDemoPackage.oteldemo.FeatureFlagService(
+    featureFlagServiceAddress,
+    grpc.credentials.createInsecure()
+  )
 }
-)
 
 process.once('SIGINT', closeGracefully)
 process.once('SIGTERM', closeGracefully)
diff --git a/src/productcatalogservice/genproto/oteldemo/demo.pb.go b/src/productcatalogservice/genproto/oteldemo/demo.pb.go
index f34d3b9986..e43670e84c 100644
--- a/src/productcatalogservice/genproto/oteldemo/demo.pb.go
+++ b/src/productcatalogservice/genproto/oteldemo/demo.pb.go
@@ -1967,6 +1967,132 @@ func (x *EvaluateProbabilityFeatureFlagResponse) GetEnabled() bool {
 	return false
 }
 
+type RangeFeatureFlagRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name           string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	NameLowerBound string `protobuf:"bytes,2,opt,name=nameLowerBound,proto3" json:"nameLowerBound,omitempty"`
+	NameUpperBound string `protobuf:"bytes,3,opt,name=nameUpperBound,proto3" json:"nameUpperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagRequest) Reset() {
+	*x = RangeFeatureFlagRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagRequest) ProtoMessage() {}
+
+func (x *RangeFeatureFlagRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagRequest.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagRequest) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *RangeFeatureFlagRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameLowerBound() string {
+	if x != nil {
+		return x.NameLowerBound
+	}
+	return ""
+}
+
+func (x *RangeFeatureFlagRequest) GetNameUpperBound() string {
+	if x != nil {
+		return x.NameUpperBound
+	}
+	return ""
+}
+
+type RangeFeatureFlagResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Enabled    bool    `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	LowerBound float32 `protobuf:"fixed32,2,opt,name=lowerBound,proto3" json:"lowerBound,omitempty"`
+	UpperBound float32 `protobuf:"fixed32,3,opt,name=upperBound,proto3" json:"upperBound,omitempty"`
+}
+
+func (x *RangeFeatureFlagResponse) Reset() {
+	*x = RangeFeatureFlagResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_demo_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RangeFeatureFlagResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RangeFeatureFlagResponse) ProtoMessage() {}
+
+func (x *RangeFeatureFlagResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_demo_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RangeFeatureFlagResponse.ProtoReflect.Descriptor instead.
+func (*RangeFeatureFlagResponse) Descriptor() ([]byte, []int) {
+	return file_demo_proto_rawDescGZIP(), []int{36}
+}
+
+func (x *RangeFeatureFlagResponse) GetEnabled() bool {
+	if x != nil {
+		return x.Enabled
+	}
+	return false
+}
+
+func (x *RangeFeatureFlagResponse) GetLowerBound() float32 {
+	if x != nil {
+		return x.LowerBound
+	}
+	return 0
+}
+
+func (x *RangeFeatureFlagResponse) GetUpperBound() float32 {
+	if x != nil {
+		return x.UpperBound
+	}
+	return 0
+}
+
 type GetFeatureFlagValueRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1978,7 +2104,7 @@ type GetFeatureFlagValueRequest struct {
 func (x *GetFeatureFlagValueRequest) Reset() {
 	*x = GetFeatureFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[35]
+		mi := &file_demo_proto_msgTypes[37]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1991,7 +2117,7 @@ func (x *GetFeatureFlagValueRequest) String() string {
 func (*GetFeatureFlagValueRequest) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[35]
+	mi := &file_demo_proto_msgTypes[37]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2004,7 +2130,7 @@ func (x *GetFeatureFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{35}
+	return file_demo_proto_rawDescGZIP(), []int{37}
 }
 
 func (x *GetFeatureFlagValueRequest) GetName() string {
@@ -2025,7 +2151,7 @@ type GetFeatureFlagValueResponse struct {
 func (x *GetFeatureFlagValueResponse) Reset() {
 	*x = GetFeatureFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[36]
+		mi := &file_demo_proto_msgTypes[38]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2038,7 +2164,7 @@ func (x *GetFeatureFlagValueResponse) String() string {
 func (*GetFeatureFlagValueResponse) ProtoMessage() {}
 
 func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[36]
+	mi := &file_demo_proto_msgTypes[38]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2051,7 +2177,7 @@ func (x *GetFeatureFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetFeatureFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*GetFeatureFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{36}
+	return file_demo_proto_rawDescGZIP(), []int{38}
 }
 
 func (x *GetFeatureFlagValueResponse) GetValue() float32 {
@@ -2074,7 +2200,7 @@ type CreateFlagRequest struct {
 func (x *CreateFlagRequest) Reset() {
 	*x = CreateFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[37]
+		mi := &file_demo_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2087,7 +2213,7 @@ func (x *CreateFlagRequest) String() string {
 func (*CreateFlagRequest) ProtoMessage() {}
 
 func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[37]
+	mi := &file_demo_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2100,7 +2226,7 @@ func (x *CreateFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagRequest.ProtoReflect.Descriptor instead.
 func (*CreateFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{37}
+	return file_demo_proto_rawDescGZIP(), []int{39}
 }
 
 func (x *CreateFlagRequest) GetName() string {
@@ -2133,7 +2259,7 @@ type CreateFlagResponse struct {
 func (x *CreateFlagResponse) Reset() {
 	*x = CreateFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[38]
+		mi := &file_demo_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2146,7 +2272,7 @@ func (x *CreateFlagResponse) String() string {
 func (*CreateFlagResponse) ProtoMessage() {}
 
 func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[38]
+	mi := &file_demo_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2159,7 +2285,7 @@ func (x *CreateFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateFlagResponse.ProtoReflect.Descriptor instead.
 func (*CreateFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{38}
+	return file_demo_proto_rawDescGZIP(), []int{40}
 }
 
 type UpdateFlagValueRequest struct {
@@ -2174,7 +2300,7 @@ type UpdateFlagValueRequest struct {
 func (x *UpdateFlagValueRequest) Reset() {
 	*x = UpdateFlagValueRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[39]
+		mi := &file_demo_proto_msgTypes[41]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2187,7 +2313,7 @@ func (x *UpdateFlagValueRequest) String() string {
 func (*UpdateFlagValueRequest) ProtoMessage() {}
 
 func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[39]
+	mi := &file_demo_proto_msgTypes[41]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2200,7 +2326,7 @@ func (x *UpdateFlagValueRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueRequest.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{39}
+	return file_demo_proto_rawDescGZIP(), []int{41}
 }
 
 func (x *UpdateFlagValueRequest) GetName() string {
@@ -2226,7 +2352,7 @@ type UpdateFlagValueResponse struct {
 func (x *UpdateFlagValueResponse) Reset() {
 	*x = UpdateFlagValueResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[40]
+		mi := &file_demo_proto_msgTypes[42]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2239,7 +2365,7 @@ func (x *UpdateFlagValueResponse) String() string {
 func (*UpdateFlagValueResponse) ProtoMessage() {}
 
 func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[40]
+	mi := &file_demo_proto_msgTypes[42]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2252,7 +2378,7 @@ func (x *UpdateFlagValueResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateFlagValueResponse.ProtoReflect.Descriptor instead.
 func (*UpdateFlagValueResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{40}
+	return file_demo_proto_rawDescGZIP(), []int{42}
 }
 
 type ListFlagsRequest struct {
@@ -2264,7 +2390,7 @@ type ListFlagsRequest struct {
 func (x *ListFlagsRequest) Reset() {
 	*x = ListFlagsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[41]
+		mi := &file_demo_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2277,7 +2403,7 @@ func (x *ListFlagsRequest) String() string {
 func (*ListFlagsRequest) ProtoMessage() {}
 
 func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[41]
+	mi := &file_demo_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2290,7 +2416,7 @@ func (x *ListFlagsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsRequest.ProtoReflect.Descriptor instead.
 func (*ListFlagsRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{41}
+	return file_demo_proto_rawDescGZIP(), []int{43}
 }
 
 type ListFlagsResponse struct {
@@ -2304,7 +2430,7 @@ type ListFlagsResponse struct {
 func (x *ListFlagsResponse) Reset() {
 	*x = ListFlagsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[42]
+		mi := &file_demo_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2317,7 +2443,7 @@ func (x *ListFlagsResponse) String() string {
 func (*ListFlagsResponse) ProtoMessage() {}
 
 func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[42]
+	mi := &file_demo_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2330,7 +2456,7 @@ func (x *ListFlagsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListFlagsResponse.ProtoReflect.Descriptor instead.
 func (*ListFlagsResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{42}
+	return file_demo_proto_rawDescGZIP(), []int{44}
 }
 
 func (x *ListFlagsResponse) GetFlag() []*FlagDefinition {
@@ -2351,7 +2477,7 @@ type DeleteFlagRequest struct {
 func (x *DeleteFlagRequest) Reset() {
 	*x = DeleteFlagRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[43]
+		mi := &file_demo_proto_msgTypes[45]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2364,7 +2490,7 @@ func (x *DeleteFlagRequest) String() string {
 func (*DeleteFlagRequest) ProtoMessage() {}
 
 func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[43]
+	mi := &file_demo_proto_msgTypes[45]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2377,7 +2503,7 @@ func (x *DeleteFlagRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagRequest.ProtoReflect.Descriptor instead.
 func (*DeleteFlagRequest) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{43}
+	return file_demo_proto_rawDescGZIP(), []int{45}
 }
 
 func (x *DeleteFlagRequest) GetName() string {
@@ -2396,7 +2522,7 @@ type DeleteFlagResponse struct {
 func (x *DeleteFlagResponse) Reset() {
 	*x = DeleteFlagResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_demo_proto_msgTypes[44]
+		mi := &file_demo_proto_msgTypes[46]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2409,7 +2535,7 @@ func (x *DeleteFlagResponse) String() string {
 func (*DeleteFlagResponse) ProtoMessage() {}
 
 func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_demo_proto_msgTypes[44]
+	mi := &file_demo_proto_msgTypes[46]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2422,7 +2548,7 @@ func (x *DeleteFlagResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteFlagResponse.ProtoReflect.Descriptor instead.
 func (*DeleteFlagResponse) Descriptor() ([]byte, []int) {
-	return file_demo_proto_rawDescGZIP(), []int{44}
+	return file_demo_proto_rawDescGZIP(), []int{46}
 }
 
 var File_demo_proto protoreflect.FileDescriptor
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 }
 
 var (
@@ -2783,7 +2930,7 @@ func file_demo_proto_rawDescGZIP() []byte {
 	return file_demo_proto_rawDescData
 }
 
-var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 45)
+var file_demo_proto_msgTypes = make([]protoimpl.MessageInfo, 47)
 var file_demo_proto_goTypes = []interface{}{
 	(*CartItem)(nil),                               // 0: oteldemo.CartItem
 	(*AddItemRequest)(nil),                         // 1: oteldemo.AddItemRequest
@@ -2820,16 +2967,18 @@ var file_demo_proto_goTypes = []interface{}{
 	(*FlagDefinition)(nil),                         // 32: oteldemo.FlagDefinition
 	(*EvaluateProbabilityFeatureFlagRequest)(nil),  // 33: oteldemo.EvaluateProbabilityFeatureFlagRequest
 	(*EvaluateProbabilityFeatureFlagResponse)(nil), // 34: oteldemo.EvaluateProbabilityFeatureFlagResponse
-	(*GetFeatureFlagValueRequest)(nil),             // 35: oteldemo.GetFeatureFlagValueRequest
-	(*GetFeatureFlagValueResponse)(nil),            // 36: oteldemo.GetFeatureFlagValueResponse
-	(*CreateFlagRequest)(nil),                      // 37: oteldemo.CreateFlagRequest
-	(*CreateFlagResponse)(nil),                     // 38: oteldemo.CreateFlagResponse
-	(*UpdateFlagValueRequest)(nil),                 // 39: oteldemo.UpdateFlagValueRequest
-	(*UpdateFlagValueResponse)(nil),                // 40: oteldemo.UpdateFlagValueResponse
-	(*ListFlagsRequest)(nil),                       // 41: oteldemo.ListFlagsRequest
-	(*ListFlagsResponse)(nil),                      // 42: oteldemo.ListFlagsResponse
-	(*DeleteFlagRequest)(nil),                      // 43: oteldemo.DeleteFlagRequest
-	(*DeleteFlagResponse)(nil),                     // 44: oteldemo.DeleteFlagResponse
+	(*RangeFeatureFlagRequest)(nil),                // 35: oteldemo.RangeFeatureFlagRequest
+	(*RangeFeatureFlagResponse)(nil),               // 36: oteldemo.RangeFeatureFlagResponse
+	(*GetFeatureFlagValueRequest)(nil),             // 37: oteldemo.GetFeatureFlagValueRequest
+	(*GetFeatureFlagValueResponse)(nil),            // 38: oteldemo.GetFeatureFlagValueResponse
+	(*CreateFlagRequest)(nil),                      // 39: oteldemo.CreateFlagRequest
+	(*CreateFlagResponse)(nil),                     // 40: oteldemo.CreateFlagResponse
+	(*UpdateFlagValueRequest)(nil),                 // 41: oteldemo.UpdateFlagValueRequest
+	(*UpdateFlagValueResponse)(nil),                // 42: oteldemo.UpdateFlagValueResponse
+	(*ListFlagsRequest)(nil),                       // 43: oteldemo.ListFlagsRequest
+	(*ListFlagsResponse)(nil),                      // 44: oteldemo.ListFlagsResponse
+	(*DeleteFlagRequest)(nil),                      // 45: oteldemo.DeleteFlagRequest
+	(*DeleteFlagResponse)(nil),                     // 46: oteldemo.DeleteFlagResponse
 }
 var file_demo_proto_depIdxs = []int32{
 	0,  // 0: oteldemo.AddItemRequest.item:type_name -> oteldemo.CartItem
@@ -2871,35 +3020,37 @@ var file_demo_proto_depIdxs = []int32{
 	26, // 36: oteldemo.EmailService.SendOrderConfirmation:input_type -> oteldemo.SendOrderConfirmationRequest
 	27, // 37: oteldemo.CheckoutService.PlaceOrder:input_type -> oteldemo.PlaceOrderRequest
 	29, // 38: oteldemo.AdService.GetAds:input_type -> oteldemo.AdRequest
-	35, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
+	37, // 39: oteldemo.FeatureFlagService.GetFeatureFlagValue:input_type -> oteldemo.GetFeatureFlagValueRequest
 	33, // 40: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:input_type -> oteldemo.EvaluateProbabilityFeatureFlagRequest
-	37, // 41: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
-	39, // 42: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
-	41, // 43: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
-	43, // 44: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
-	5,  // 45: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
-	4,  // 46: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
-	5,  // 47: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
-	7,  // 48: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
-	9,  // 49: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
-	8,  // 50: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
-	12, // 51: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
-	14, // 52: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
-	16, // 53: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
-	19, // 54: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
-	18, // 55: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
-	23, // 56: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
-	5,  // 57: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
-	28, // 58: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
-	30, // 59: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
-	36, // 60: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
-	34, // 61: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
-	38, // 62: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
-	40, // 63: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
-	42, // 64: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
-	44, // 65: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
-	45, // [45:66] is the sub-list for method output_type
-	24, // [24:45] is the sub-list for method input_type
+	35, // 41: oteldemo.FeatureFlagService.GetRangeFeatureFlag:input_type -> oteldemo.RangeFeatureFlagRequest
+	39, // 42: oteldemo.FeatureFlagService.CreateFlag:input_type -> oteldemo.CreateFlagRequest
+	41, // 43: oteldemo.FeatureFlagService.UpdateFlagValue:input_type -> oteldemo.UpdateFlagValueRequest
+	43, // 44: oteldemo.FeatureFlagService.ListFlags:input_type -> oteldemo.ListFlagsRequest
+	45, // 45: oteldemo.FeatureFlagService.DeleteFlag:input_type -> oteldemo.DeleteFlagRequest
+	5,  // 46: oteldemo.CartService.AddItem:output_type -> oteldemo.Empty
+	4,  // 47: oteldemo.CartService.GetCart:output_type -> oteldemo.Cart
+	5,  // 48: oteldemo.CartService.EmptyCart:output_type -> oteldemo.Empty
+	7,  // 49: oteldemo.RecommendationService.ListRecommendations:output_type -> oteldemo.ListRecommendationsResponse
+	9,  // 50: oteldemo.ProductCatalogService.ListProducts:output_type -> oteldemo.ListProductsResponse
+	8,  // 51: oteldemo.ProductCatalogService.GetProduct:output_type -> oteldemo.Product
+	12, // 52: oteldemo.ProductCatalogService.SearchProducts:output_type -> oteldemo.SearchProductsResponse
+	14, // 53: oteldemo.ShippingService.GetQuote:output_type -> oteldemo.GetQuoteResponse
+	16, // 54: oteldemo.ShippingService.ShipOrder:output_type -> oteldemo.ShipOrderResponse
+	19, // 55: oteldemo.CurrencyService.GetSupportedCurrencies:output_type -> oteldemo.GetSupportedCurrenciesResponse
+	18, // 56: oteldemo.CurrencyService.Convert:output_type -> oteldemo.Money
+	23, // 57: oteldemo.PaymentService.Charge:output_type -> oteldemo.ChargeResponse
+	5,  // 58: oteldemo.EmailService.SendOrderConfirmation:output_type -> oteldemo.Empty
+	28, // 59: oteldemo.CheckoutService.PlaceOrder:output_type -> oteldemo.PlaceOrderResponse
+	30, // 60: oteldemo.AdService.GetAds:output_type -> oteldemo.AdResponse
+	38, // 61: oteldemo.FeatureFlagService.GetFeatureFlagValue:output_type -> oteldemo.GetFeatureFlagValueResponse
+	34, // 62: oteldemo.FeatureFlagService.EvaluateProbabilityFeatureFlag:output_type -> oteldemo.EvaluateProbabilityFeatureFlagResponse
+	36, // 63: oteldemo.FeatureFlagService.GetRangeFeatureFlag:output_type -> oteldemo.RangeFeatureFlagResponse
+	40, // 64: oteldemo.FeatureFlagService.CreateFlag:output_type -> oteldemo.CreateFlagResponse
+	42, // 65: oteldemo.FeatureFlagService.UpdateFlagValue:output_type -> oteldemo.UpdateFlagValueResponse
+	44, // 66: oteldemo.FeatureFlagService.ListFlags:output_type -> oteldemo.ListFlagsResponse
+	46, // 67: oteldemo.FeatureFlagService.DeleteFlag:output_type -> oteldemo.DeleteFlagResponse
+	46, // [46:68] is the sub-list for method output_type
+	24, // [24:46] is the sub-list for method input_type
 	24, // [24:24] is the sub-list for extension type_name
 	24, // [24:24] is the sub-list for extension extendee
 	0,  // [0:24] is the sub-list for field type_name
@@ -3332,7 +3483,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueRequest); i {
+			switch v := v.(*RangeFeatureFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3344,7 +3495,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetFeatureFlagValueResponse); i {
+			switch v := v.(*RangeFeatureFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3356,7 +3507,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagRequest); i {
+			switch v := v.(*GetFeatureFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3368,7 +3519,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlagResponse); i {
+			switch v := v.(*GetFeatureFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3380,7 +3531,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueRequest); i {
+			switch v := v.(*CreateFlagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3392,7 +3543,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateFlagValueResponse); i {
+			switch v := v.(*CreateFlagResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3404,7 +3555,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsRequest); i {
+			switch v := v.(*UpdateFlagValueRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3416,7 +3567,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListFlagsResponse); i {
+			switch v := v.(*UpdateFlagValueResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3428,7 +3579,7 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DeleteFlagRequest); i {
+			switch v := v.(*ListFlagsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -3440,6 +3591,30 @@ func file_demo_proto_init() {
 			}
 		}
 		file_demo_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListFlagsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteFlagRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_demo_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteFlagResponse); i {
 			case 0:
 				return &v.state
@@ -3458,7 +3633,7 @@ func file_demo_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_demo_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   45,
+			NumMessages:   47,
 			NumExtensions: 0,
 			NumServices:   10,
 		},
diff --git a/src/productcatalogservice/genproto/oteldemo/demo_grpc.pb.go b/src/productcatalogservice/genproto/oteldemo/demo_grpc.pb.go
index 535279ca56..97a1dc6c40 100644
--- a/src/productcatalogservice/genproto/oteldemo/demo_grpc.pb.go
+++ b/src/productcatalogservice/genproto/oteldemo/demo_grpc.pb.go
@@ -1067,6 +1067,7 @@ var AdService_ServiceDesc = grpc.ServiceDesc{
 const (
 	FeatureFlagService_GetFeatureFlagValue_FullMethodName            = "/oteldemo.FeatureFlagService/GetFeatureFlagValue"
 	FeatureFlagService_EvaluateProbabilityFeatureFlag_FullMethodName = "/oteldemo.FeatureFlagService/EvaluateProbabilityFeatureFlag"
+	FeatureFlagService_GetRangeFeatureFlag_FullMethodName            = "/oteldemo.FeatureFlagService/GetRangeFeatureFlag"
 	FeatureFlagService_CreateFlag_FullMethodName                     = "/oteldemo.FeatureFlagService/CreateFlag"
 	FeatureFlagService_UpdateFlagValue_FullMethodName                = "/oteldemo.FeatureFlagService/UpdateFlagValue"
 	FeatureFlagService_ListFlags_FullMethodName                      = "/oteldemo.FeatureFlagService/ListFlags"
@@ -1084,6 +1085,15 @@ type FeatureFlagServiceClient interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(ctx context.Context, in *EvaluateProbabilityFeatureFlagRequest, opts ...grpc.CallOption) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1120,6 +1130,15 @@ func (c *featureFlagServiceClient) EvaluateProbabilityFeatureFlag(ctx context.Co
 	return out, nil
 }
 
+func (c *featureFlagServiceClient) GetRangeFeatureFlag(ctx context.Context, in *RangeFeatureFlagRequest, opts ...grpc.CallOption) (*RangeFeatureFlagResponse, error) {
+	out := new(RangeFeatureFlagResponse)
+	err := c.cc.Invoke(ctx, FeatureFlagService_GetRangeFeatureFlag_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *featureFlagServiceClient) CreateFlag(ctx context.Context, in *CreateFlagRequest, opts ...grpc.CallOption) (*CreateFlagResponse, error) {
 	out := new(CreateFlagResponse)
 	err := c.cc.Invoke(ctx, FeatureFlagService_CreateFlag_FullMethodName, in, out, opts...)
@@ -1167,6 +1186,15 @@ type FeatureFlagServiceServer interface {
 	// of implementing the random decision taking on their own. If no flag with that name exists, the response will have the
 	// value false.
 	EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error)
+	// A convenience function to fetch a triplet of feature flag values that represent a range of values. For example, for
+	// simulating increased request latencies in a service, the triplet of feature flags to be created would be
+	// - serviceNameSimulateSlownessEnabled: on/off switch or probability for the feature (value is >= 0 & <= 1),
+	// - serviceNameSimulateSlownessLowerBound: the lower bound in milliseconds for the additional delay,
+	// - serviceNameSimulateSlownessUpperBound: the upper bound in milliseconds for the additional delay.
+	// That is, the feature flag service assumes that there are additional feature flag values with the suffix "LowerBound" and
+	// "UpperBound" when a range feature flag with a particular name is requested. In case one or both of these do not exist, the
+	// arbitrary defaults for the lower and upper bound are 0 and 1000 respectively.
+	GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error)
 	// Creates a new feature flag.
 	CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error)
 	// Updates the value of a feature flag.
@@ -1188,6 +1216,9 @@ func (UnimplementedFeatureFlagServiceServer) GetFeatureFlagValue(context.Context
 func (UnimplementedFeatureFlagServiceServer) EvaluateProbabilityFeatureFlag(context.Context, *EvaluateProbabilityFeatureFlagRequest) (*EvaluateProbabilityFeatureFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method EvaluateProbabilityFeatureFlag not implemented")
 }
+func (UnimplementedFeatureFlagServiceServer) GetRangeFeatureFlag(context.Context, *RangeFeatureFlagRequest) (*RangeFeatureFlagResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetRangeFeatureFlag not implemented")
+}
 func (UnimplementedFeatureFlagServiceServer) CreateFlag(context.Context, *CreateFlagRequest) (*CreateFlagResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateFlag not implemented")
 }
@@ -1249,6 +1280,24 @@ func _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler(srv interface{},
 	return interceptor(ctx, in, info, handler)
 }
 
+func _FeatureFlagService_GetRangeFeatureFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RangeFeatureFlagRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: FeatureFlagService_GetRangeFeatureFlag_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FeatureFlagServiceServer).GetRangeFeatureFlag(ctx, req.(*RangeFeatureFlagRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _FeatureFlagService_CreateFlag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(CreateFlagRequest)
 	if err := dec(in); err != nil {
@@ -1336,6 +1385,10 @@ var FeatureFlagService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "EvaluateProbabilityFeatureFlag",
 			Handler:    _FeatureFlagService_EvaluateProbabilityFeatureFlag_Handler,
 		},
+		{
+			MethodName: "GetRangeFeatureFlag",
+			Handler:    _FeatureFlagService_GetRangeFeatureFlag_Handler,
+		},
 		{
 			MethodName: "CreateFlag",
 			Handler:    _FeatureFlagService_CreateFlag_Handler,