It seems that document currently expresses that "the AT Protocol, which powers the Bluesky social network" is "[a] major protocol in competition with the Fediverse", which suggests that neither "the AT Protocol" nor "Bluesky" are included in the Fediverse.

Moreover, "AT Protocol" and "Bluesky" are conspicuously absent from the second paragraph of the article content / lead section.

The majority of Fediverse platforms are based on free and open-source software, and create connections between servers using the ActivityPub protocol. Some software still supports older federation protocols as well, such as OStatus, the Diaspora protocol and Zot. Diaspora* is the only actively developed software project classified under the original definition of Fediverse that does not support ActivityPub.

There discussion related to this around https://thebrainbin.org/m/fediverse@lemmy.world/t/705694/-/comment/5682529

[–] Sl00k@programming.dev -1 points 1 day ago (1 children)

Yeah I think we've been having on off discussions about ATProto's place in the Fediverse here for probably 2ish years in multiple threads.

Looks like today the crowd has finally more sternly come to a decision lol. I think there were threads last year here around this ATProto with a lot better nuance and discussion, but Bluesky has been getting a lot of hate and misinformation thrown at it from this pocket of the internet lately, which is somewhat disappointing since they both the pocket should operate symbiotically.

Possibly a sign of newer Lemmy users though which is good regardless.

[–] thirtyfold8625@thebrainbin.org 4 points 1 day ago

"Reconciliation must come before economic cooperation", and I doubt that there will be imminent "reconciliation" between Bluesky and people who want to spend less than $100 for each month that they want to back up content shared using the AT Protocol. This is not impossible (since "Bluesky is a Public Benefit Corporation"), and there is a documented goal to have "multiple independent Relay services", but it seems that having one would cost well over $100 each month. In the meantime, trying to cooperate with a person is harder to justify when you don't know if they are actually willing to help you or not.

As a relevant example, consider that there are a notable number of people who wish to avoid cooperating with threads.net even though I would describe it as being part of the Fediverse.