AWS 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 AWS Direct Connect and AWS Transit Gateway over a transit VIF.

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