S4 is a lightweight, self-contained S3-compatible storage with a web interface

Perfect for POCs, development environments, demos, and simple deployments where a full-scale object storage solution is overkill. It combines Ceph RADOS Gateway (RGW) backed by a standard filesystem and a modern UI into a single, easy-to-deploy container.

S4 provides full S3 API compatibility while requiring minimal resources and configuration.

That name feels like it's asking for trouble