AWS Transit Gateway (TGW)

AWS Transit Gateway (Nov 2018) allow to build a hub-and-spoke network topology. You can connect your existing VPCs, data centers, remote offices, and remote gateways to a managed Transit Gateway, with full control over network routing and security, even if your VPCs, Active Directories, shared services, and other resources span multiple AWS accounts.

• https://aws.amazon.com/transit-gateway/

Related

• AWS Internet Gateway (IGW)
• Amazon VPC attachments in AWS Transit Gateway

See also

• AWS Transit Gateway, aws_ec2_transit_gateway_vpc_attachment
• AWS Gateways, AWS Transit Gateway, AWS Internet Gateway, AWS NAT Gateways

https://aws.amazon.com/blogs/aws/new-use-an-aws-transit-gateway-to-simplify-your-network-architecture/