AWS Certified Cloud Practitioner (CLF-C02) — Question 591

A cloud engineer wants to store data in Amazon S3. The engineer will access some of the data yearly and some of the data daily.

Which S3 storage class will meet these requirements MOST cost-effectively?

Answer options

• A. S3 Standard
• B. S3 Glacier Deep Archive
• C. S3 One Zone-Infrequent Access (S3 One Zone-IA)
• D. S3 Intelligent-Tiering

Correct answer: D

Explanation

Amazon S3 Intelligent-Tiering is the most cost-effective choice because it automatically optimizes storage costs by moving data between frequent and infrequent access tiers based on changing access patterns without retrieval fees. S3 Standard would be too expensive for the yearly accessed data, whereas S3 Glacier Deep Archive is unsuitable for daily access due to long retrieval times. S3 One Zone-IA does not support the daily access needs cost-effectively and stores data in only one Availability Zone.