Assuming there exist an object storage as described in T3054, there needs to be an object storage backend to store / retrieve objects. The name is **winery** (using the "winery namespace" agreed on on the mailing list last week). The proposed patch is what I think represents the "API dispatcher" in https://wiki.softwareheritage.org/images/4/4a/Ceph-objstorage-sw-architecture.svg which is a replacement of the [object storage](https://docs.softwareheritage.org/devel/architecture/overview.html#software-architecture-overview) at the bottom of the global architecture.