VPCs Together
As you and your team build your accounts, you will likely have more than one VPC for each account. If you operate in multiple Regions, there will need to be at least one VPC per account per Region. As you segment out your network for different purposes, different VPCs (both public and private) hold various resources, and the traffic routed to those VPCs follows a set of rules that can sometimes become complex. You need to have a way to connect these various VPCs, whether they be in the same account or across disparate accounts.
There are several different techniques that you can use to network VPCs together. Which method you use depends mainly on your requirements. The most common are shown in the following list:
- VPC peering: This lets you connect two VPCs via a direct, private network connection. VPC peering enables traffic flow between VPCs as if they were part of the same network. This approach suits scenarios that require a connection between VPCs in the...