ANS-C01 Question 23
Select 3You are designing a high-availability architecture for a global application that serves dynamic and static content. The architecture must minimize latency for users worldwide, ensure scalability, and integrate seamlessly with AWS services. Which combination of services and configurations should you implement?
- A
Use Amazon CloudFront to distribute both static and dynamic content, with an origin set to an Application Load Balancer (ALB) in multiple AWS Regions.
- B
Configure Route 53 with a latency-based routing policy to direct traffic to the nearest ALB in the appropriate Region.
- C
Implement API Gateway with regional endpoints and configure CloudFront as the caching layer for API responses.
- D
Use an Elastic Load Balancer (ELB) in a single Region and configure CloudFront to distribute traffic globally.
- E
Deploy Route 53 with a weighted routing policy to distribute traffic evenly across multiple Regions.
Show answer and explanation
Correct answers: A, B, C
Explanation
To achieve global high availability and low latency, you need a combination of services that distribute content efficiently and route traffic intelligently based on user location. CloudFront is ideal for distributing both static and dynamic content, while Route 53 latency-based routing ensures traffic is directed to the nearest Regional ALB. For APIs, API Gateway with regional endpoints combined with CloudFront caching provides a scalable and low-latency solution. These configurations together meet the requirements for minimizing latency, ensuring scalability, and integrating seamlessly with AWS services.
- A. Correct.
Correct: CloudFront is designed to deliver both static and dynamic content with low latency, and using an ALB as the origin in multiple Regions ensures high availability and scalability.
- B. Correct.
Correct: Route 53 latency-based routing directs users to the closest ALB in the appropriate Region, minimizing latency for global users.
- C. Correct.
Correct: API Gateway with regional endpoints allows you to deploy APIs closer to your users, and pairing it with CloudFront for caching further improves performance for repeated requests.
- D. Incorrect.
Incorrect: Using an ELB in a single Region would not provide the desired global high-availability and low-latency benefits, even with CloudFront configured.
- E. Incorrect.
Incorrect: Weighted routing does not ensure that traffic is directed to the nearest Region, which could lead to higher latency for some users.