This image shows three instances of Oracle Cloud Infrastructure (London, Frankfurt, and Ashburn) and the Customer On-Premises Infrastructure.

Oracle Cloud Infrastructure (uk-london-1) has Object Storage, DNS, and a VCN with an Internet Gateway. Within the VCN is a public subnet that spans 3 availability domains. Each domain has a Virtual Machine and Block Volume within the public subnet.

Oracle Cloud Infrastructure (eu-frankfurt-1) has FSS and Object Storage, and a VCN with an Internet Gateway. Within the VCN is a regional subnet for a single availability domain. The subnet has two Virtual Machines, an Instance Pool, a Cluster Network, and two Bare Metal machines. Oracle Cloud Infrastructure (us-ashburn-1) is an exact replica of Oracle Cloud Infrastructure (eu-frankfurt-1).

Customer On-Premises Infrastructure has a subnet with a firewall. Within the subnet are two Virtual Machines and two Bare Metal machines.