Connectivity Between VPCs - Comparison of VPC Peering, VGW, DGW, and TGW
VGW(Virtual Private Gateway): It's the oldest way, and it was first announced. DGW(Direct Connect Gateway): It was announced in 2017. TGW(Transit Gateway): It was released in 2018. *** VPC peering *** It provides a 1:1 connection between VPCs and establishes a private connection between VPCs in the same account or in different accounts. Using Private IP It is possible to connect not only within the same region but also within different regions. Does not support peering between VPCs if IP is reduplication Only one peering resource can be set up between two VPCs Does not support multiple peering relationships between VPCs Internet Gateway (IGW) or Virtual Private Gateway (VGW) is not required Provides high availability connectivity Maintain Traffic on a Global AWS Backbone Use Case: Provides 1:1 connection between VPCs Use Case: Business Expansion Case Using VPC Peering AWS Direct Connect & VGW(Virtual Private Gateway) A VGW is an endpoint that provides a connection with a VPC wh