AWS Certified Solutions Architect – Associate (SAA-C03) — Question 30

A company is storing backup files by using Amazon S3 Standard storage. The files are accessed frequently for 1 month. However, the files are not accessed after 1 month. The company must keep the files indefinitely.
Which storage solution will meet these requirements MOST cost-effectively?

Answer options

• A. Configure S3 Intelligent-Tiering to automatically migrate objects.
• B. Create an S3 Lifecycle configuration to transition objects from S3 Standard to S3 Glacier Deep Archive after 1 month.
• C. Create an S3 Lifecycle configuration to transition objects from S3 Standard to S3 Standard-Infrequent Access (S3 Standard-IA) after 1 month.
• D. Create an S3 Lifecycle configuration to transition objects from S3 Standard to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 1 month.

Correct answer: B

Explanation

The correct answer is B because S3 Glacier Deep Archive is the most cost-effective option for long-term storage of infrequently accessed data. The other options (A, C, and D) do not provide the same level of cost efficiency for data that will not be accessed after the initial month.