The image shows a single OCI Region with an Availability Domain and OCI Managed services.

The Availability Domain hosts a VCN with a Service Gateway and two subnets: Application subnet, and Database backup subnet.

The Application subnet hosts the Application on OCI Compute VM.

The Database subnet hosts Oracle Database on Oracle Base Database Service which connects to OCI Managed Services through the Service Gateway.

The OCI Managed Services include OCI Vault, Oracle Database Autonomous Recovery Service, and OCI Object Storage.