diff --git a/operations/template/net.tf b/operations/template/net.tf
index 6da2d618e..eab8fdb7a 100644
--- a/operations/template/net.tf
+++ b/operations/template/net.tf
@@ -21,6 +21,15 @@ resource "azurerm_subnet" "app" {
   address_prefixes     = ["172.17.67.128/26"]
 
   service_endpoints = ["Microsoft.ContainerRegistry", "Microsoft.KeyVault", "Microsoft.Storage", "Microsoft.Web"]
+
+  delegation {
+    name = "delegation"
+
+    service_delegation {
+      name    = "Microsoft.Web/serverFarms"
+      actions = ["Microsoft.Network/virtualNetworks/subnets/join/action"]
+    }
+  }
 }
 
 resource "azurerm_subnet" "database" {