Amazon S3 Files gives the world’s biggest object store a file system

AWS launched S3 Files, letting existing S3 buckets be accessed like native file systems over NFS v4.1+.

It connects EC2, ECS, EKS, Fargate, and Lambda to S3 data for standard file operations, while the data stays in S3.

The feature uses EFS-based infrastructure with caching and prefetching to support collaborative apps, AI agents, and ML pipelines.

This narrows the gap between object storage and file storage without moving data or running separate metadata systems.