A company has three VPCs in the same AWS Region connected to a single AWS Direct Connect gateway to access their on-premises data center. The company now needs to enable direct VPC-to-VPC communication between all three VPCs. Which of the following solutions should the solutions architect implement to meet this requirement?
- ARoute transitive traffic between the VPCs through the existing Direct Connect gateway.
- BCreate an Amazon Route 53 Private Hosted Zone and associate it with all three VPCs to enable transitive network routing through DNS.
- Attach the VPCs to an AWS Transit Gateway and configure routing to allow communication between the VPCs through the Transit Gateway.Answer
- DDeploy a single NAT Gateway in one VPC and route all inter-VPC traffic through it to enable transitive pathing.
Answer
Attach the VPCs to an AWS Transit Gateway and configure routing to allow communication between the VPCs through the Transit Gateway.
AWS Transit Gateway acts as a central router to allow transitive routing between attached VPCs. This fulfills the requirement to enable direct VPC-to-VPC communication efficiently.
Step-by-Step Solution
Key Concept
Transitive VPC-to-VPC routing in a hybrid network architecture using AWS Transit Gateway.