Promote app stacks content

Author: jonels-msft

articles/postgresql/TOC.yml

@@ -688,9 +688,11 @@
   - name: How-to guides
     items:
     - name: Connect and query
+      href: hyperscale/howto-connect.md
+    - name: App stacks
       items:
-        - name: Psql client
-          href: hyperscale/howto-connect.md
+        - name: Overview
+          href: hyperscale/howto-app-stacks-overview.md
         - name: Python
           href: hyperscale/howto-app-stacks-python.md
         - name: Node.js

articles/postgresql/hyperscale/howto-app-stacks-overview.md

@@ -0,0 +1,30 @@
+---
+title: Writing apps to connect and query Hyperscale (Citus)
+description: Learn to query Hyperscale (Citus) in multiple languages
+ms.author: sasriram
+author: saimicrosoft
+ms.service: postgresql
+ms.subservice: hyperscale-citus
+ms.topic: how-to
+ms.date: 06/20/2022
+---
+
+# Query Hyperscale (Citus) from your app stack
+
+[!INCLUDE[applies-to-postgresql-hyperscale](../includes/applies-to-postgresql-hyperscale.md)]
+
+## Overview
+
+Select your development language to learn how to connect to Hyperscale (Citus)
+to create, read, update, and delete data.
+
+* [Python](howto-app-stacks-python.md)
+* [Node JS](howto-app-stacks-nodejs.md)
+* [C#](howto-app-stacks-Csharp.md)
+* [Java](howto-app-stacks-java.md)
+* [Ruby](howto-app-stacks-ruby.md)
+
+## Next steps
+
+Learn to [build scalable applications](howto-build-scalable-apps-overview.md)
+with Hyperscale (Citus).

articles/postgresql/hyperscale/howto-build-scalable-apps-model-high-throughput.md

@@ -59,5 +59,6 @@ When building a high-throughput app, keep some optimization in mind.
 
 We've completed the how-to for building scalable apps.
 
+* Learn how to use specific [app stacks](howto-app-stacks-overview.md) with Hyperscale (Citus).
 * You may now want to know how to [scale a server group](howto-scale-grow.md)
   to give your app more nodes and hardware capacity.

articles/postgresql/hyperscale/howto-build-scalable-apps-model-multi-tenant.md

@@ -129,8 +129,10 @@ it easy to include a tenant ID in queries. Here are instructions:
 
 ## Next steps
 
-If you're migrating an existing multi-tenant app to Hyperscale (Citus), see
-this highly detailed guide:
+We've completed the how-to for building scalable apps.
 
-> [!div class="nextstepaction"]
-> [Migrating an existing app (external) >](https://docs.citusdata.com/en/stable/develop/migration.html#transitioning-mt)
+* Learn how to use specific [app stacks](howto-app-stacks-overview.md) with Hyperscale (Citus).
+* You may now want to know how to [scale a server group](howto-scale-grow.md)
+  to give your app more nodes and hardware capacity.
+* To migrate an existing multi-tenant app to Hyperscale (Citus), see
+  [Migrating an existing app (external) >](https://docs.citusdata.com/en/stable/develop/migration.html#transitioning-mt)

articles/postgresql/hyperscale/howto-build-scalable-apps-model-real-time.md

@@ -78,5 +78,6 @@ SELECT create_reference_table('countries');
 
 We've completed the how-to for building scalable apps.
 
+* Learn how to use specific [app stacks](howto-app-stacks-overview.md) with Hyperscale (Citus).
 * You may now want to know how to [scale a server group](howto-scale-grow.md)
   to give your app more nodes and hardware capacity.

articles/postgresql/hyperscale/index.yml

@@ -28,6 +28,8 @@ landingContent:
         links:
           - text: Building scalable apps
             url: howto-build-scalable-apps-overview.md
+          - text: Language-specific app stacks
+            url: hyperscale/howto-app-stacks-overview.md
 
   # Card
   - title: Scale