Peer VPCs in different AWS Regions by using AWS Transit Gateway

This template presents you an easy way of joining VPCs that are located across different AWS regions using AWS Transit Gateway. 
 

Rather than setting up individual peering connections between each of your VPCs, you can connect them all to a central point known as the Transit Gateway. When you have Transit Gateways in two regions, you can peer at them with one another. This makes it a lot easier for your workloads to communicate, even if they are in different locations in the world. The template is designed to provide you with a full picture of how this setup operates. It details the parts involved and how traffic moves. Even if you're not highly technical, you can understand the general concept: connect it all in one hub rather than constructing multiple individual connections. 
 

Why Is This Template a Game Changer? 

Prior to Transit Gateway, if you needed to connect three VPCs within one region to three VPCs within another region, you would have to build and maintain numerous peering connections. There would need to be routing updates and constant monitoring on each of them. 
 

With AWS Transit Gateway, it's a breeze. You route each VPC to the Transit Gateway in its region. Then, you peer at the Transit Gateways across the regions. That's it. Your instances can now communicate securely with one another. 

Here's why this method makes such a big difference: 

• Less complexity: You are not building and operating a mesh of individual connections. 

• Easier management: All routing is resolved through the Transit Gateway. 

• Improved visibility: You get to see everything at one glance. 

• Scalability: Scale out VPCs without having to redesign your entire network. 

In short, you lose less time troubleshooting networks and gain more time on your workloads. 
 

Who Should Use This Template and When? 

This template is for anyone who is working with resources across multiple AWS regions. 

• If you have applications in multiple regions and want them to talk to each other, this will help you. 

• If you are going to be adding new regions to your architecture, this template is a solid place to begin. 

• If your development team wants a secure, centrally managed method of doing inter‑region networking, this solution makes a lot of sense. 

It is better to arrange this early when you begin working across domains. You can do it later, but you will need to rework some parts of your network. Beginning with this pattern saves you effort in the long run. 
 

What Are the Main Components of the Template? 

To make it clear, here are the key parts of the architecture depicted in the template: 

• AWS Cloud: This is the overall environment in which everything is executed. 

• Region 1 and Region 2: Two distinct AWS regions where your workloads are deployed. 

• Amazon EC2: Virtual machine instances executing your applications. 

• VPC (Virtual Private Cloud): There is an isolated network for each region. 

• Transit Gateway: A center of gravity that connects your VPCs in a region. 

• Transit Gateway Peering: The link that connects two Transit Gateways in different regions. 

• Routing Table: Directives that instruct your network to route traffic between VPCs. 

• Security Groups: Used to manage access to your EC2 instances. 

• IAM Roles: Used to manage permissions for network services. 

• Network ACLs: Additional traffic control layers at the subnet level. 

• Inter‑Region Traffic Flow: Actual data flow between regions. 

• VPN Connectivity: Optional additional security with a private VPN connection. 

• Direct Connect: Private dedicated connection if necessary. 

• Logging & Monitoring: Utilities to monitor network health and performance. 
   

How to Start with Cloudairy ?

If you wish to open and use this template in Cloudairy, here's how to do it step by step: 

• Log in to Cloudairy using your account credentials. 

• Go to the Templates menu on the top of the dashboard. 

• Search for "Peer VPCs in Different AWS Regions Using Transit Gateway." 

• Click the template for search results. 

• Hit the Open Template button to open it in your workspace. 

• Begin changing and adapting it to your own environment. 
   

How to Use Cloudairy ?

After you have opened the template, there is much you can do: 

• Select Template: Select this template from the library as your starting point. 

• Add Components: You can add additional AWS services, additional regions, or additional details if required. 

• Collaborate & Optimize: Share it with your team, plan routing policies, and find opportunities for cost saving. 

• Visualize Dependencies: Easily visualize how your VPCs are connected and how traffic moves. 

• Export Final Flowchart: Once complete, export the final design for documentation or deployment. 
   

Summary 

Peering VPCs between AWS regions may seem complicated, but it doesn't have to be. With AWS Transit Gateway, you can make your network simpler. Rather than dealing with numerous separate peering connections, you peer at each VPC to a central connection point and let the Transit Gateway do the rest. This template provides you with a clear point of departure. It shows how to configure multi‑region connectivity that is secure, scalable, and simpler to manage. If you're creating a new architecture or enhancing an existing one, this pattern saves you time and simplifies things.