Purpose
- Central hub for transitive routing between thousands of VPCs and on-premises networks, using a hub-and-spoke design.
- Eliminates complex VPC peering meshes and simplifies route management.
Key Features
- Regional resource – Connects multiple AZs within a region and supports inter-region peering.
- Cross-account sharing – Use AWS Resource Access Manager (RAM) to share with other AWS accounts.
- Routing control – Route tables define and restrict VPC-to-VPC and on-premises communication.
- Integration – Supports AWS Direct Connect Gateway, Site-to-Site VPN, and Customer Gateways.
- Unique capability – Only AWS service that supports IP Multicast.