A data lake stores objects whose access patterns are unpredictable — some become hot again unexpectedly. The company wants automatic cost optimization without performance impact or retrieval fees for frequent access. Which S3 storage class fits?
A) S3 Standard for everything.
B) S3 Intelligent-Tiering.
C) S3 Glacier Deep Archive.
D) S3 One Zone-IA.
Correct Answer: B
Explanation: S3 Intelligent-Tiering automatically moves objects between access tiers based on usage, optimizing cost for unknown or changing patterns, with no retrieval fees and only a small monitoring charge. (A) never optimizes cost. (C) Deep Archive suits rarely-accessed data with slow retrieval. (D) One Zone-IA sacrifices AZ-level durability.