Introduced integration section

Author: danjoa

guides/integration/index.md

@@ -0,0 +1,3 @@
+# CAP-level Service Integration
+
+This guide provides an overview of the integration capabilities available at the CAP (Cloud Application Programming) level. It covers various aspects of integrating CAP applications with external services and systems, including identity and authentication, audit logging, attachments, documents, notifications, and telemetry.

menu.md

@@ -72,6 +72,18 @@
   ### [SAP HANA Native](guides/databases/hana-native)
   ### [PostgreSQL](guides/databases/postgres)
 
+## [Integration](guides/integration/)
+
+  ### [CAP-level Service Integration](guides/integration/)
+  ### [CAP-level Data Integration](guides/integration/)
+  ### [Platform Service Integration](guides/integration/)
+  #### [Identity & Authentication](guides/integration/)
+  #### [Audit Logging](guides/integration/)
+  #### [Attachments](guides/integration/)
+  #### [Documents](guides/integration/)
+  #### [Notifications](guides/integration/)
+  #### [Telemetry](guides/integration/)
+
 ## [Protocols/APIs](guides/advanced/publishing-apis/)
 
   ### [OData APIs](guides/advanced/odata)