AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 331

A gaming company is running an online multiplayer game in multiple AWS Regions. The company needs traffic from its end users to be routed to the Region that is closest to the end users geographically. When maintenance occurs in a Region, traffic must be routed to the next closest Region with no changes to the IP addresses being used as connections by the end users.
Which solution will meet these requirements?

Answer options

• A. Create an Amazon CloudFront distribution in front of all the Regions.
• B. Use an Amazon Route 53 geoproximity routing policy to navigate traffic to the closest Region.
• C. Use an Amazon Route 53 geolocation routing policy to navigate traffic to the closest Region.
• D. Configure AWS Global Accelerator in front of all the Regions.

Correct answer: D

Explanation

AWS Global Accelerator provides static Anycast IP addresses that serve as a fixed entry point, routing user traffic over the AWS global network to the closest healthy Region. If a Region undergoes maintenance, Global Accelerator automatically redirects traffic to the next closest healthy Region without changing the IP addresses utilized by the client. DNS-based solutions like Route 53 (geoproximity or geolocation) do not guarantee static IP addresses and can suffer from DNS caching delays during failover.