SAA-C03 Question 258
Select 3A global e-commerce company wants to serve its customers with low-latency access to their application worldwide. The application consists of a web front-end, a REST API, and a back-end processing system. The company has users in North America, Europe, and Asia. Which AWS services or features should be leveraged to meet the low-latency requirement?
- A
Amazon CloudFront with edge locations for caching static content
- B
AWS Global Accelerator for optimizing global application traffic routing
- C
Amazon RDS with cross-region read replicas for low-latency database read operations
- D
AWS Direct Connect for connecting on-premises data centers to AWS regions
- E
Amazon S3 Transfer Acceleration for speeding up data uploads to a central S3 bucket
Show answer and explanation
Correct answers: A, B, C
Explanation
To reduce latency in a globally distributed application, AWS offers services like Amazon CloudFront for caching static content at edge locations, AWS Global Accelerator for optimizing traffic routing using AWS's global network, and Amazon RDS cross-region read replicas to enable low-latency database reads. These services together address the latency challenges for global users accessing the application. AWS Direct Connect and S3 Transfer Acceleration, while valuable for other use cases, do not directly address global application access latency.
- A. Correct.
Amazon CloudFront caches content at edge locations, reducing latency for users accessing static content like images, JavaScript, and CSS files.
- B. Correct.
AWS Global Accelerator provides optimized routing through the AWS global network, improving application performance for users worldwide.
- C. Correct.
Amazon RDS cross-region read replicas allow low-latency database reads by replicating data to regions closer to users, reducing the time it takes for database queries to execute.
- D. Incorrect.
AWS Direct Connect is used for creating a dedicated connection between on-premises data centers and AWS regions, but it does not address the latency of global user access to the application.
- E. Incorrect.
Amazon S3 Transfer Acceleration is designed to speed up uploads to S3 buckets, but it is not relevant for reducing latency in serving application content to users.