Transit Gateway (TGW)

Related: VPC

Works on top of DX or VPN

Transit hub which connects VPCs to on-premise. Also, transitive!
Reduces network complexity.
It’s a network gateway object, so HA and scaleable.
Creates attachment (the way it connects to other network objects), like VPC, AWS Site-to-Site VPN and Gateway

Comparison w/o and with TGW

• w/o (trying to connect complex network into AWS in HA way)
  
• with, transitive HA single point, does the mesh, can cross-account