SAA-C03 Question 230
Single answerA company is designing a web application that will be deployed on Amazon EC2 instances behind an Application Load Balancer (ALB). The application processes user-uploaded images and stores them in Amazon S3. The company wants to optimize the performance of delivering these images to users while minimizing costs. Which solution should the company implement?
- A
Use Amazon S3 Transfer Acceleration to improve image delivery performance.
- B
Store the images in Amazon S3 and configure an Amazon CloudFront distribution to cache the images.
- C
Serve the images directly from the Amazon EC2 instances using the ALB.
- D
Store the images in Amazon Elastic Block Store (EBS) volumes attached to the EC2 instances.
Show answer and explanation
Correct answer: B
Explanation
The best solution is to store the images in Amazon S3 and use Amazon CloudFront to cache the images. Amazon CloudFront is a content delivery network (CDN) that helps minimize latency and improves performance by delivering content from edge locations closest to the user, while also reducing costs by offloading traffic from the origin (S3).
- A. Incorrect.
Amazon S3 Transfer Acceleration helps improve upload speeds to Amazon S3 for geographically distant users, but it is not designed for improving image delivery performance to end users.
- B. Correct.
Configuring an Amazon CloudFront distribution to cache the images stored in Amazon S3 reduces latency and minimizes costs by serving the images from edge locations closer to the user.
- C. Incorrect.
Serving images directly from Amazon EC2 instances using the ALB can increase latency, and it is not cost-efficient as it bypasses caching mechanisms like CloudFront.
- D. Incorrect.
Amazon Elastic Block Store (EBS) is optimized for low-latency block-level storage for EC2 instances, but it is not intended for serving static content like images to end users.