ANS-C01 Question 152
Single answerYou have deployed a multi-region application that uses an overlay network to interconnect resources across AWS Regions. The application requires low latency and secure communication between its components. Which AWS solution would best meet your requirements for configuring and managing the overlay network?
- A
AWS Transit Gateway with VPC peering
- B
AWS Cloud WAN with AWS Direct Connect
- C
AWS Transit Gateway with AWS Global Accelerator
- D
AWS Transit Gateway Network Manager with VPN connections
Show answer and explanation
Correct answer: B
Explanation
AWS Cloud WAN is specifically designed for building, managing, and monitoring global networks across AWS Regions and on-premises locations. It simplifies the creation of overlay networks by using centralized policies and routing management. When combined with AWS Direct Connect, it ensures secure, low-latency connectivity, making it the most suitable choice for this scenario.
- A. Incorrect.
AWS Transit Gateway with VPC peering is not suitable for efficiently managing multi-region connectivity as VPC peering does not provide a structured or scalable solution for global overlay networks.
- B. Correct.
AWS Cloud WAN with AWS Direct Connect is the best option for building and managing an overlay network across AWS Regions, as AWS Cloud WAN provides centralized management and policy enforcement, while AWS Direct Connect ensures low-latency and secure communication.
- C. Incorrect.
AWS Transit Gateway with AWS Global Accelerator is not ideal for overlay networks, as AWS Global Accelerator is primarily used for improving application availability and performance, not for creating overlay networks.
- D. Incorrect.
AWS Transit Gateway Network Manager with VPN connections could potentially work for connecting regions, but it generally introduces higher latency compared to AWS Cloud WAN and is less suitable for large-scale, low-latency overlay networks.