SOA-C02 Question 227
Select 2A company is hosting a web application behind an Application Load Balancer (ALB) in a single AWS Region. The application needs to serve users globally with low latency. The company also wants to ensure that users are automatically routed to the nearest edge location for improved performance while still using the existing ALB. Which combination of solutions should the SysOps Administrator implement?
- A
Configure an Amazon CloudFront distribution with the ALB as the origin.
- B
Enable AWS Global Accelerator for the ALB.
- C
Deploy the ALB in multiple Regions for redundancy.
- D
Enable ALB cross-zone load balancing to reduce latency.
- E
Use AWS Direct Connect to connect the users directly to the ALB.
Show answer and explanation
Correct answers: A, B
Explanation
To serve global users with low latency, CloudFront and AWS Global Accelerator are the appropriate solutions. CloudFront provides edge caching, improving performance for static and dynamic content, while AWS Global Accelerator optimizes traffic routing through the AWS global network to reduce latency. These solutions allow the company to use its existing ALB as the origin while meeting performance requirements.
- A. Correct.
Correct: CloudFront is a content delivery network (CDN) service that caches content at edge locations and improves latency for global users. By setting the ALB as the origin, the ALB continues to handle requests while CloudFront improves performance.
- B. Correct.
Correct: AWS Global Accelerator provides global users with a static IP address and routes traffic through the AWS global network to the nearest Regional endpoint, reducing latency. It can be configured to work with the ALB.
- C. Incorrect.
Incorrect: Deploying the ALB in multiple Regions would require significant architectural changes and additional costs. This is not necessary when CloudFront and Global Accelerator can achieve global low latency.
- D. Incorrect.
Incorrect: ALB cross-zone load balancing distributes traffic across all targets in all Availability Zones within a Region, but it does not address global latency or edge routing.
- E. Incorrect.
Incorrect: AWS Direct Connect establishes a private connection between an on-premises network and AWS. It is not suitable for routing global user traffic to an ALB.