Threads is officially starting to test ActivityPub integration

Mark Zuckerberg said Threads is testing ActivityPub support that will make its posts available on Mastodon and other interoperable services.

The Verge

@tchambers @fediversenews

So basically one way cross-posting from Threads to the Fediverse... for now, trust us. Kind of like an RSS feed. No ability to comment back from Mastodon, and no ability to post on Threads from Mastodon. If you want to respond to something you see from Threads, you will need to create a Threads account and go there. Seems like a pretty obvious Threads marketing initiative and a play to undermine the Fediverse. Kind of as predicted, this is not "federation".

@mastodonmigration @fediversenews

True. Not yet. But if I were planning how to do ActivtyPub support at scale, this is a smart way to phase it in. But again, you are correct: untill it is done, it is not done.