You are asked to suggest an appropriate Amazon S3 storage class for “data with unknown/changing access pattern”. Which one would you suggest?

Answer options:

A.Amazon S3 Intelligent-Tiering
B.Amazon S3 Standard
C.Amazon S3 Glacier
D.Amazon S3 Standard-Infrequent Access

Answer: A
Option A is CORRECT. Amazon S3 Intelligent-Tiering is best suited for data with “unknown/changing access pattern”.
Option B is INCORRECT. S3 standard is ideal for general-purpose storage of frequently accessed data.
Option C is INCORRECT. Amazon S3 Glacier is preferable for archival of data for a long term.
Option D is INCORRECT. Amazon S3 Standard-Infrequent Access is better suited for less frequently accessed, long-lived data.
Reference:
https://aws.amazon.com/s3/storage-classes/