Direct Connect with AWS Transit Gateway over transit VIF - AWS Prescriptive Guidance
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Direct Connect with AWS Transit Gateway over transit VIF

The following diagram shows how you can connect VPCs from multiple AWS Regions to an on-premises environment by using Direct Connect and AWS Transit Gateway over a transit VIF.

Connecting VPCs from multiple Regions to on premises.

The transit gateway routes traffic through the centralized Direct Connect gateway for all AWS Regions. A transit VIF attachment to the Direct Connect gateway enables your network to connect up to six Regional, centralized transit gateways over a private, dedicated connection.