AWS Transit Gateway - Amazon Virtual Private Cloud Connectivity Options

AWS Transit Gateway

AWS Transit Gateway is a highly available and scalable service to consolidate the AWS VPC routing configuration for a region with a hub-and- spoke architecture. Each spoke VPC only needs to connect to the Transit Gateway to gain access to other connected VPCs. Transit Gateway across different regions can peer with each other to enable VPC communications across regions. With large number of VPCs, Transit Gateway provides simpler VPC-to-VPC communication management over VPC Peering, as shown in the following figure.

Figure 14 - AWS Transit Gateway

AWS Transit Gateway traffic always stays on the global AWS backbone and never traverses the public internet, thereby reducing threat vectors, such as common exploits and DDoS attacks.

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