Question #1164
A company is managing a multi-region hybrid cloud architecture with multiple VPCs and on-premises networks. They require a centralized routing service to dynamically manage traffic between all connected networks without configuring individual peering relationships. Which AWS service should they use?
AWS Direct Connect
AWS Transit Gateway
Amazon VPC Peering
Amazon API Gateway
Explanation
AWS Transit Gateway (B) is designed to simplify network management by acting as a central hub for routing traffic between multiple VPCs, on-premises networks, and AWS services. It eliminates the need for complex peering relationships (as required by VPC Peering (C)) and supports dynamic routing protocols.
- Why B is correct: Transit Gateway enables scalable, centralized routing across regions and hybrid environments, reducing operational overhead.
- Why others are incorrect:
- A (Direct Connect): Provides dedicated network links to AWS but does not manage routing.
- C (VPC Peering): Requires manual, point-to-point connections between VPCs, which becomes unwieldy in large architectures.
- D (API Gateway): Manages API traffic, not network routing.
Key Points: Transit Gateway simplifies multi-region/hybrid routing, supports dynamic updates, and avoids mesh topologies.
Answer
The correct answer is: B