AWS Certified Solutions Architect – Associate (SAA-C03) — Question 268

A company provides an online service for posting video content and transcoding it for use by any mobile platform. The application architecture uses Amazon Elastic File System (Amazon EFS) Standard to collect and store the videos so that multiple Amazon EC2 Linux instances can access the video content for processing. As the popularity of the service has grown over time, the storage costs have become too expensive.

Which storage solution is MOST cost-effective?

Answer options

• A. Use AWS Storage Gateway for files to store and process the video content.
• B. Use AWS Storage Gateway for volumes to store and process the video content.
• C. Use Amazon EFS for storing the video content. Once processing is complete, transfer the files to Amazon Elastic Block Store (Amazon EBS).
• D. Use Amazon S3 for storing the video content. Move the files temporarily over to an Amazon Elastic Block Store (Amazon EBS) volume attached to the server for processing.

Correct answer: D

Explanation

Amazon S3 offers highly durable and extremely cost-effective object storage compared to Amazon EFS, making it the ideal choice for storing raw video uploads. Copying the files temporarily to an Amazon EBS volume attached to the processing EC2 instances allows for high-performance processing before outputting the results. Using AWS Storage Gateway is unnecessary and adds complexity, while keeping data on Amazon EFS remains too costly.