AWS Certified Solutions Architect – Associate (SAA-C03) — Question 443

A company wants to host a scalable web application on AWS. The application will be accessed by users from different geographic regions of the world. Application users will be able to download and upload unique data up to gigabytes in size. The development team wants a cost-effective solution to minimize upload and download latency and maximize performance.

What should a solutions architect do to accomplish this?

Answer options

• A. Use Amazon S3 with Transfer Acceleration to host the application.
• B. Use Amazon S3 with CacheControl headers to host the application.
• C. Use Amazon EC2 with Auto Scaling and Amazon CloudFront to host the application.
• D. Use Amazon EC2 with Auto Scaling and Amazon ElastiCache to host the application.

Correct answer: A

Explanation

Amazon S3 Transfer Acceleration enables fast, easy, and secure transfers of files over long distances between your client and an S3 bucket by leveraging Amazon CloudFront’s globally distributed edge locations. This is highly cost-effective and specifically addresses both upload and download latency for large, unique datasets. Other options like CacheControl headers or CloudFront caching do not optimize the upload path for large, unique files as effectively.