AWS Certified Cloud Practitioner (CLF-C02) — Question 340

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

Amazon S3 Transfer Acceleration optimizes data transfer speeds by routing traffic through AWS edge locations and over the AWS backbone network instead of the public internet. Other options like S3 Cross-Region Replication are designed for geographical redundancy, while S3 Standard-IA is a cost-optimized storage class and S3 Event Notifications are used for automation. Thus, only S3 Transfer Acceleration is designed to leverage edge locations for reducing end-user latency.