S3 Standard designed durability (11 nines); data spread across ≥3 AZs; ~500T objects stored
99.999999999%observed
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| As of | 2026 |
| Source | AWS S3 documentation / S3 20th-anniversary post (Mar 2026) · Durability and Data Protection, “How durable is Amazon S3?”: 99.999999999% durability and redundancy across a minimum of three Availability Zones |
| Review | checking…review by 2026-11-06 · slow cadence |
| Recorded changes | last 2026-07-07 |
| Claim id | s3-standard-designed-durability-11-nines-data |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.