The image shows an Oracle Cloud Infrastructure region with 1 availability domain and 1 virtual cloud network (VCN). Users connect with the region by using site-to-site VPN and an internet gateway provided by the VCN.

Region provides the following services:

Oracle Cloud Infrastructure GoldenGate
Oracle Analytics Cloud (OAC)
Oracle Cloud Infrastructure Object Storage
Oracle Cloud Infrastructure Identity and Access Management
Compartments
Policies

The VCN provides the following gateways:

Internet gateway: Provides communications between public subnets and internet hosts.
Network address translation (NAT) gateway: Enables private resources in a VCN to access hosts on the internet, without exposing those resources to incoming internet connections.
Service gateway: VCNs communicate with services in the Oracle Services Network (OSN) such as object storage over the Oracle network fabric without traversing the internet.
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.

The VCN has 1 public subnet that provides its own security list and route table. The subnet provides instances of Oracle Autonomous Database with autoscaling and Oracle Cloud Infrastructure Data Science.