S3 · Simple Storage Service
Amazon's object-storage service whose API has become the de facto standard for cloud object storage.
Current numbers
99.999999999%S3 Standard designed durability (11 nines); data spread across ≥3 AZs; ~500T objects stored
~10x fasterS3 Express One Zone data access vs S3 Standard; up to 80% lower request cost; single-AZ
~$0.11/GB-moS3 Express One Zone storage rate (several x Standard) — the flash-tier price premium