The image shows:

• An OCI region containing an API Gateway, Functions, Integrations, and Autonomous Database.
• A 3rd Party Cloud containing a Web App, Mobile Client, and Data Anaytics.
• An Oracle SaaS setup.
• An Oracle SaaS customer data center containing a Web App, Mobile Client, Data Analytics.

Bidirectional arrows connect the API Gateway to Functions, Integrations, Autonomous Database, 3rd Party cloud, and Oracle SaaS customer data center.

A birectional arrow connects Functions and Autonomous Database.

A bidirectional arrow connects Integrations to Oracle SaaS.