A company stores millions of images in Amazon S3. The access patterns for these images are highly unpredictable; some images are accessed daily, while others are not accessed for months. The company wants to automatically optimize storage costs without incurring retrieval fees or operational overhead.<br/><br/>Which S3 storage class should be used?

Answer options:

S3 Standard

S3 Standard-Infrequent Access (S3 Standard-IA)

S3 Intelligent-Tiering

S3 Glacier Flexible Retrieval

How to approach this question

Look for 'unpredictable access patterns' and 'no retrieval fees'.

Full Answer

C.S3 Intelligent-Tiering✓ Correct

S3 Intelligent-Tiering

Amazon S3 Intelligent-Tiering is the only cloud storage class that delivers automatic cost savings by moving objects between four access tiers when access patterns change, without performance impact or operational overhead. It does not charge retrieval fees.

Common mistakes

Choosing Standard-IA, forgetting that it incurs per-GB retrieval fees which are bad for unpredictable workloads.

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