ANS-C01 Question 20
Single answerA global e-commerce company wants to improve the performance and availability of its web application for users worldwide. The application is hosted across multiple AWS Regions and uses an Application Load Balancer (ALB) in each Region. The company needs a solution to intelligently route traffic to the closest Region based on latency and automatically failover to another Region in case of a Regional outage. Which solution should the company implement?
- A
Use AWS Global Accelerator to route traffic to the closest healthy endpoint based on latency.
- B
Configure Amazon Route 53 with Geolocation Routing to direct users to the appropriate Region.
- C
Set up Cross-Region Load Balancing with Elastic Load Balancers to distribute traffic globally.
- D
Deploy an Amazon CloudFront distribution with origin failover across the Regional ALBs.
Show answer and explanation
Correct answer: A
Explanation
AWS Global Accelerator is specifically designed for global traffic management. It routes traffic to the closest healthy endpoint based on latency and provides automatic Regional failover, ensuring high availability and low latency for users worldwide. This makes it the optimal solution for the requirements described in the scenario.
- A. Correct.
Correct. AWS Global Accelerator improves global application availability and performance by routing traffic to the closest healthy endpoint based on network latency and automatically failing over in case of Regional outages.
- B. Incorrect.
Incorrect. Amazon Route 53 Geolocation Routing directs traffic based on user location rather than latency. It does not automatically failover to another Region in case of a Regional outage.
- C. Incorrect.
Incorrect. Elastic Load Balancers do not natively support Cross-Region Load Balancing. This option is not a valid solution for global traffic management.
- D. Incorrect.
Incorrect. While Amazon CloudFront can improve application performance through caching and origin failover, it does not route traffic based on latency or provide the same failover capabilities as AWS Global Accelerator.