10 minNov 4, 2026
How Amazon S3 Works
How Amazon S3 works, for beginners, proven on real S3: Ana uploads her tea shop's menu, opens its web address and gets Access Denied, and we follow why through every part of S3: buckets and objects found by keys (no real folders), signed requests checked against IAM and bucket policies, Block Public Access, presigned links that expire, versioning and delete markers, copies across three Availability Zones, and storage classes from Standard to Glacier.
