A VPC peering connection is a networking connection between two VPCs that enables you to route traffic between them using private IP addresses. Instances in either VPC can communicate with each other as if they are within the same network. This blog provides step-by-step instructions on how to set up VPC networking between regions (also known as inter-region VPC peering connections).
How To Deploy Peering Between AWS Regions
Cloud, Multi-Cloud, Hybrid-Cloud, Geographic Distribution and Geo-Scale