AWS Certified Solutions Architect – Associate (SAA-C02) — Question 740

A company is hosting a static website on Amazon S3 and is using Amazon Route 53 for DNS. The website is experiencing increased demand from around the world. The company must decrease latency for users who access the website.
Which solution meets these requirements MOST cost-effectively?

Answer options

• A. Replicate the S3 bucket that contains the website to all AWS Regions. Add Route 53 geolocation routing entries.
• B. Provision accelerators in AWS Global Accelerator. Associate the supplied IP addresses with the S3 bucket. Edit the Route 53 entries to point to the IP addresses of the accelerators.
• C. Add an Amazon CloudFront distribution in front of the S3 bucket. Edit the Route 53 entries to point to the CloudFront distribution.
• D. Enable S3 Transfer Acceleration on the bucket. Edit the Route 53 entries to point to the new endpoint.

Correct answer: C

Explanation

Amazon CloudFront is a highly cost-effective Content Delivery Network (CDN) designed to cache static content from Amazon S3 at edge locations globally, significantly reducing latency for users worldwide. Replicating S3 buckets across all regions (Option A) or using AWS Global Accelerator (Option B) incurs much higher costs and complexity. S3 Transfer Acceleration (Option D) is optimized for accelerating uploads to S3, not for reducing read latency for end-users accessing a website.