Question

A data engineering team stores a large data lake on Amazon S3. The datasets are queried heavily for the first few weeks after arrival, but access patterns after that are unpredictable—some older datasets are suddenly re-queried for compliance investigations, while others are never touched again. The team wants to minimize storage costs without risking retrieval delays or manual lifecycle rule tuning, and without incurring retrieval fees when older data is unexpectedly accessed. Which storage approach best meets these requirements?

Accepted Answer

Store all objects in S3 Intelligent-Tiering, allowing S3 to automatically move objects between access tiers based on usage.

Answer

Create an S3 Lifecycle rule that transitions objects to S3 Glacier Flexible Retrieval after 30 days.

Answer

Create an S3 Lifecycle rule that transitions objects to S3 Standard-IA after 30 days and to S3 Glacier Deep Archive after 90 days.

Answer

Keep all objects in S3 Standard to guarantee immediate access regardless of query frequency.