Have you used AWS S3 for storage? What types of S3 storage classes are available?

AWS S3 offers several storage classes to match different durability, availability, and cost requirements:

• Standard: General-purpose, high durability and availability.
• Intelligent‑Tiering: Automatically moves objects between two tiers (frequent and infrequent access) based on usage patterns.
• Standard‑IA (Infrequent Access): Lower storage cost, higher retrieval cost, suitable for data accessed less than once a month.
• One Zone‑IA: Similar to Standard‑IA but stored in a single availability zone, cheaper but less resilient.
• Glacier: Very low-cost archival storage with retrieval times ranging from minutes to hours.
• Glacier Deep Archive: Lowest cost, retrieval times up to 12 hours, ideal for long-term retention.
• Reduced Redundancy Storage (RRS) was deprecated in favor of the above classes.

Each class balances price against access frequency and durability, allowing you to optimize storage costs while meeting business needs.