How To Set Up AWS VPC Peering Between Different Accounts

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Setting up VPC peering between different accounts might seem complicated at first, but with the right steps, it can be done smoothly. This is a straightforward way to connect two Virtual Private Clouds (VPCs) across different AWS accounts, allowing them to communicate securely and privately.

First, make sure you have access to both AWS accounts involved. In the AWS Management Console of the account that owns the VPC you want to connect from, go to the VPC dashboard. Here, find the “Peering Connections” section and choose to create a new peering connection.

When creating the peering connection, you’ll need to specify the VPC ID you want to peer with, along with the AWS account ID of the owner of that VPC. After setting the details, send the peering request.

Next, log into the AWS account that owns the other VPC. You’ll find the peering request in the “Peering Connections” area, where you can review and accept it.

Once the request is accepted, go back to both accounts and update the route tables for each VPC. Mark sure that the route tables include routes pointing to the other VPC through the peering connection. This allows traffic to flow between the two networks.

Finally, update the security groups associated with resources in both VPCs. Make sure they allow inbound and outbound traffic from the IP ranges of the connected VPCs. By doing this, resources in both VPCs will be able to communicate freely.

After finishing these steps—creating the peering connection, accepting the request, updating route tables, and adjusting security groups—the two VPCs will be linked. They can now share resources and communicate securely, even though they are in separate accounts.

This process helps keep your network organized and secure while allowing you to extend your cloud infrastructure across multiple accounts efficiently.