This image shows an Oracle Cloud Infrastructure (OCI) region with 1 availability domain, 3 fault domains, and a software-as-a-service (SaaS) tenancy.

The SaaS tenancy shows Oracle Fusion Cloud Enterprise Resource Planning and Oracle Fusion Cloud Supply Chain & Manufacturing apps.

The on-premises customer data center uses an on-premises firewall and site-to-site virtual private networks (VPNs-active and standby) to connect to OCI by using a dynamic routing gateway (DRG).

The region provides the following services:

• Oracle Cloud Infrastructure Audit
• Oracle Cloud Infrastructure Identity and Access Management
• Oracle Cloud Infrastructure Object Storage is used for database backups
• Oracle Integration Cloud Service for SaaS

One virtual cloud network (VCN) provides the following gateways:

• Dynamic routing gateway (DRG): Provides private connectivity between on-premises networks and VCNs by using Site-to-Site VPN or FastConnect. A DRG can also route traffic between VCNs for remote peering.
• Service gateway: VCNs communicate with services such as object storage over the Oracle network fabric without traversing the internet.

The VCN includes 2 subnets:

• Active private subnet: Provides 6 Oracle Integration Cloud Service connectivity agents in fault domain 1 to handle traffic from the DRG.
• Prod Database private subnet: Provides an Oracle Autonomous Transaction Processing instance across all fault domains.