Posted On: Nov 26, 2018
AWS Transit Gateway is a new service that enables customers to connect thousands of Amazon Virtual Private Clouds (VPCs) and their on-premises networks using a single gateway. As you grow the number of workloads in AWS across multiple accounts, you need to scale your networks, control your connectivity policies better and monitor your network effectively. Today, you can connect pairs of Amazon VPCs using peering. However, managing point-to-point connectivity across large number of VPCs, without centrally managing connectivity and routing policies, can be operationally costly and cumbersome. This solution can be hard to manage for hundreds of VPCs.
With AWS Transit Gateway, you only have to create and manage a single connection from a central gateway to each Amazon VPC, on premises data center, or remote office across your network. AWS Transit Gateway acts as a hub where traffic is routed among all the connected networks, the spokes. This hub and spoke model significantly simplifies management and reduces operational costs because each network only has to connect to the AWS Transit Gateway. With effective routing policies on the Transit Gateway, you have centralized control over how your Amazon VPCs and on-premises networks connect to each other. This connectivity model makes it easy and simple for you to scale and monitor your networks over time.
AWS Transit Gateway is available in US East (Virginia), US East (Ohio), US West (Oregon), US West (Northern California), EU (Ireland), and AsiaPacific (Mumbai) AWS Regions. Support for other AWS Regions is coming soon.