spinifex/docs/coverage/s3/intro.md

Predastore serves this endpoint

S3 is the one surface the AWS gateway does not answer itself. Object storage runs on Predastore, which serves the S3 REST API directly over its own endpoint.

Routed is not the same as conforming

This page says an operation is routed to a handler. It does not say the handler's behaviour matches S3 in every case.

That behaviour is measured separately, against the ceph/s3-tests suite Ceph RGW, MinIO and Garage are all validated with, and the results are published in Predastore's S3 compatibility report.