ANS-C01 Question 19
Single answerYour company operates a globally distributed e-commerce platform with users across North America, Europe, and Asia. You need to ensure low-latency access to the platform for users in each region while also providing automatic failover in case one region becomes unavailable. Which solution would best meet these requirements?
- A
Use AWS Global Accelerator to route traffic to the nearest healthy endpoint based on client location and endpoint health.
- B
Deploy an Amazon CloudFront distribution with origin failover to route traffic to the nearest healthy endpoint.
- C
Use Route 53 Geolocation Routing to route users to the nearest endpoint and enable failover by configuring a weighted routing policy.
- D
Set up an Application Load Balancer (ALB) in each region and rely on DNS latency-based routing for directing traffic.
Show answer and explanation
Correct answer: A
Explanation
AWS Global Accelerator is specifically designed for global traffic management with low latency and high availability. It uses Anycast IPs to direct users to the closest healthy endpoint, ensuring optimal performance and automatic failover. Other options, like CloudFront or Route 53, have specific use cases but do not provide the same level of functionality for this scenario.
- A. Correct.
Correct. AWS Global Accelerator is designed for low-latency, global traffic management. It uses Anycast IP addresses to route traffic to the closest healthy endpoint and supports automatic failover in case of endpoint failure.
- B. Incorrect.
Incorrect. While CloudFront can cache content globally and provide origin failover, it is not designed for real-time global traffic routing across multiple endpoints.
- C. Incorrect.
Incorrect. Route 53 Geolocation Routing can route users based on their geographic location, but it does not inherently provide automatic failover. Combining it with weighted routing adds complexity and does not meet the low-latency requirement as effectively as Global Accelerator.
- D. Incorrect.
Incorrect. Latency-based routing with ALBs can help direct traffic to the closest endpoint, but it lacks the real-time health checks and automatic failover capabilities provided by AWS Global Accelerator.