initial alternatives

source/sync/device-sync-deprecation.txt

@@ -14,13 +14,57 @@ Device Sync Deprecation
    :class: singlecol
 
 As of September 2024, Device Sync is deprecated for Atlas App Services. Device
-Sync will reach end-of-life and be removed on **September 30, 2025**.
-
-Atlas Device Sync is deprecated. This means that apps built using Sync will need
-to  move to  an alternative solution or remove Sync before **September 30, 2025**.
+Sync will reach end-of-life and be removed on **September 30, 2025**. If you
+use Device Sync, you should migrate to alternative solution providers before
+Device Sync is removed.
 
 Edge Server, which is in preview, is also deprecated and will reach end-of-life
 and be removed before **September 30, 2024**.
 
 Refer to the :ref:`App Services deprecation page <app-services-deprecation>` for
 more deprecation information.
+
+Alternative Solutions
+---------------------
+
+AWS AppSync
+~~~~~~~~~~~
+
+AWS AppSync creates serverless Pub/Sub APIs to simplify development through a
+single endpoint to securely query, update, or publish data.
+
+Refer to the `AWS AppSync documentation <https://aws.amazon.com/appsync/>`__ to
+learn more.
+
+Ditto
+~~~~~
+
+Ditto is a real-time edge sync platform for mobile, web, IoT, and server apps.
+
+- `MongoDB Partner Page <https://cloud.mongodb.com/ecosystem/ditto>`__
+- `Ditto documentation <https://ditto.live/>`__
+
+HiveMQ
+~~~~~~
+
+HiveMQ is an MQTT-based messaging platform that ensures fast, reliable, and
+secure data movement to and from connected IoT devices.
+
+Refer to the `HiveMQ documentation <https://www.hivemq.com/products/hivemq-edge/>`__
+to learn more.
+
+Ably
+~~~~
+
+Ably is a real-time infrastructure service that uses Pub/Sub APIs in a wide
+variety of SDKs to power live experiences.
+
+Refer to the `Ably documentation <https://ably.com/docs/>`__ to learn more.
+
+Custom Solution
+~~~~~~~~~~~~~~~
+
+If you want to consider building a custom solution, we have many technology
+consulting partners (such as `WeKan 
+<https://cloud.mongodb.com/ecosystem/wekan-enterprise-solutions>`__) with
+expertise in synchronization technologies.