Many VPCs and an on-premises network must be connected.
Avoid a growing full mesh of individual VPC peerings and centralize routing.
Which AWS service is most appropriate?
AWS Transit Gateway acts as a network hub for VPC and VPN attachments and centralizes route management.
Detailed explanation
Transit Gateway provides a hub for connectivity and centralized routing.
Transit Gateway provides a hub for connectivity and centralized routing.
The number of connections and route tables grows quickly and increases operational work.
The number of connections and route tables grows quickly and increases operational work.
DNS records route names, not network packets between VPCs.
DNS records route names, not network packets between VPCs.
S3 policies control object access and do not define VPC packet routes.
S3 policies control object access and do not define VPC packet routes.
Check official documentation
Compare the following points with the official documentation.
AWS Transit Gatewayのアタッチメントとルーティングの公式説明を確認する。
What to confirm
多数のVPC接続にハブ型ネットワークを選択できる。
Key points
- AWS Transit Gateway
- VPC attachment
- Hub and spoke
Notes
- Environment: AWS公式Transit Gatewayドキュメントの確認
- Confirm current AWS pricing and service behavior in the official documentation.
Foundation review
Connection growth
A hub-and-spoke design avoids the connection explosion of a full mesh.
Routing ownership
Transit Gateway route tables provide a central place to define connectivity between attachments.