AWS Certified Cloud Practitioner — Question 97

A company wants to use Amazon S3 to store its legacy data. The data is rarely accessed. However, the data is critical and cannot be recreated. The data needs to be available for retrieval within seconds.
Which S3 storage class meets these requirements MOST cost-effectively?

Answer options

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

Correct answer: C

Explanation

The S3 Standard-Infrequent Access (S3 Standard-IA) class is the most cost-effective option for data that is accessed less frequently but still needs to be retrieved quickly. S3 Standard is more expensive for infrequent access needs, S3 One Zone-IA does not provide the same level of durability, and S3 Glacier is unsuitable as it is designed for long-term archival and has retrieval times that are not in seconds.