AWS turns its S3 storage service into a file system for AI agents

AWS has launched S3 Files, a native file system interface on top of Amazon S3 that exposes S3 objects as files and directories via NFS v4.1+. This eliminates the longstanding tradeoff between S3's low cost and the interactivity of traditional file systems like EFS. The interface supports standard file operations including permissions, locking, and incremental updates, and is accessible from any AWS compute instance, container, or function. It targets AI agent workloads, ML training, and multi-node applications that require concurrent read/write access without moving data out of S3. For developers, it removes the need to rewrite applications for object storage or use workarounds like FUSE-based tools. For CIOs, it consolidates data lakes, file systems, and staging layers into a single S3-based architecture, reducing duplication and operational overhead. S3 Files is now generally available via the AWS Management Console or CLI.