That's correct, Emma
Mike, we've helped create a generic ActivityPub backend which we're using as the basis of MoodleNet. We're only a few weeks away from federated instances, so hang on a bit longer!
More details about CommonsPub (which is a community project that MoodleNet devs are involved in) can be found here: http://commonspub.org
Thanks Doug. I figured I might be too early yet.