ANS-C01 Question 421
Select 3Your organization hosts a multi-region web application in AWS. The application requires high availability and low-latency access for global users. You are tasked with designing a traffic distribution solution that directs users to the nearest regional endpoint while also supporting failover in case a region becomes unavailable. Which combination of AWS services would best meet these requirements?
- A
Use Amazon Route 53 with a latency-based routing policy to direct traffic to the nearest regional endpoint.
- B
Use AWS Global Accelerator to optimize traffic routing and provide automatic failover between regional endpoints.
- C
Use an Application Load Balancer (ALB) in each region to distribute traffic within the region.
- D
Use AWS Direct Connect to connect users to the nearest region for low-latency access.
- E
Use Amazon CloudFront to cache static content at edge locations and handle failover between regions.
Show answer and explanation
Correct answers: A, B, C
Explanation
To meet the requirements of high availability, low latency, and failover, a combination of Amazon Route 53 for latency-based routing, AWS Global Accelerator for optimized traffic routing and failover, and ALBs for intra-region traffic distribution is ideal. AWS Direct Connect and Amazon CloudFront do not address global traffic distribution or regional failover needs directly.
- A. Correct.
Correct: Amazon Route 53 latency-based routing ensures users are directed to the nearest regional endpoint based on latency, improving user experience.
- B. Correct.
Correct: AWS Global Accelerator routes traffic to the optimal endpoint and supports automated failover, ensuring high availability and low latency.
- C. Correct.
Correct: An ALB in each region distributes traffic within the region, ensuring efficient load balancing across instances or services.
- D. Incorrect.
Incorrect: AWS Direct Connect is a dedicated network connection and is not designed for global traffic distribution or failover.
- E. Incorrect.
Incorrect: While Amazon CloudFront provides low-latency access for cached content, it does not handle dynamic traffic routing or failover between regions.