The image shows an cross-region connectivity with hub and spoke topology with two AWS Regions: AWS Region 1 and AWS Region 2.

AWS Region 1 hosts a Transit Gateway hub with three Attachments connected to each of the three VPCs hosted in two availability zones: Application-A VPC and subnet, Application-B VPC and subnet in Availability Zone 1, and Application-C VPC and subnet in Availability Zone 2. The Peering Connection connects the Transit Gateway in AWS Region 1 using the Peering Attachment to the hub Transit Gateway in AWS Region 2.

AWS Region 2 hosts the second Transit Gateway hub and connects to an Application VPC using the Transit Gateway Attachment. The Transit VPC and subnet connect to the ODB network hosting Oracle AI Database@AWS using ODB peering connectivity.