[rajbala]

How does this work when the object stores don't support all the features of S3?

For instance Atmos doesn't have public buckets, DNS names for buckets, named keys implemented like S3, regions, etc.

But it does have features that S3 doesn't have like byte range updates, erasure coding, etc.

[gaul]

S3Proxy cannot provide more that the S3 API allows, such as byte range updates, although some features can be enabled by bucket-level policies. S3Proxy can emulate features that other providers lack like public buckets and could provide other features like bucket-in-hostname. Apache jclouds provides the underlying object store compatibility so S3Proxy will benefit from improvements to it.