SAP-C02 Question 549
Single answerA company runs a global e-commerce platform hosted in AWS. The platform uses an Application Load Balancer (ALB) to distribute traffic to multiple EC2 instances across multiple Availability Zones. Recently, the company noticed increased latency when accessing the platform from regions outside of the United States. As a Solutions Architect, you are tasked with designing a solution to improve latency for users globally while minimizing operational overhead. Which solution meets these requirements?
- A
Enable AWS Global Accelerator and configure it to route traffic to the ALB.
- B
Create additional ALBs in each global region and use Amazon Route 53 latency-based routing to direct users to their nearest ALB.
- C
Enable cross-region replication for the EC2 instances to reduce latency for global users.
- D
Add additional EC2 instances to the existing ALB to handle the increased traffic.
Show answer and explanation
Correct answer: A
Explanation
AWS Global Accelerator provides a highly effective solution for reducing latency for global users by routing traffic through AWS's global edge network. It integrates seamlessly with existing ALBs and requires minimal operational overhead. Other options either do not address the root cause (geographical latency) or involve significant management complexity.
- A. Correct.
Enabling AWS Global Accelerator is the best choice in this scenario. It improves latency by routing traffic through the AWS global network, minimizing the distance to the application. It integrates seamlessly with the existing ALB, reducing operational overhead.
- B. Incorrect.
Creating additional ALBs in each region and using Route 53 latency-based routing would technically solve the problem but requires significant operational overhead to manage multiple ALBs and associated resources.
- C. Incorrect.
Enabling cross-region replication for EC2 instances does not address latency issues directly. Replication is designed for data redundancy and disaster recovery, not for improving user access latency.
- D. Incorrect.
Adding additional EC2 instances to the existing ALB improves capacity but does not address the root cause of increased latency for global users. The issue lies with the geographical distance, not server capacity.