AWS Certified Cloud Practitioner — Question 266

Which Amazon S3 feature or storage class uses the AWS backbone network and edge locations to reduce latencies from the end user to Amazon S3?

Answer options

• A. S3 Cross-Region Replication
• B. S3 Transfer Acceleration
• C. S3 Event Notifications
• D. S3 Standard-Infrequent Access (S3 Standard-IA)

Correct answer: B

Explanation

S3 Transfer Acceleration utilizes Amazon CloudFront's globally distributed edge locations to route data over the optimized AWS backbone network, which significantly reduces transfer times to Amazon S3. In contrast, S3 Cross-Region Replication is designed for copying data between buckets in different regions, S3 Event Notifications trigger automated workflows, and S3 Standard-IA is a storage class optimized for infrequently accessed data.