Is it any service that includes the ability to federate? If so, are Matrix/XMPP/other non-ActivityPub services part of the Fediverse, or does Fediverse really just mean ActivityPub?

The context is wanting to promote a Matrix chat room on discuss.online: #online.discuss:discuss.online (see post). Does it belong in Lemmy communities like this one, [email protected], etc? Or does it not count as part of the Fediverse?

  • turtle [he/him]@lemm.ee
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    2 months ago

    According to https://en.wikipedia.org/wiki/Fediverse:

    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.[5][6]

    You would have to look at those citations to see how authoritative they are. This may also still be open to interpretation?

  • єχтяανɒgαηт єηzумэ@lemm.ee
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    2 months ago

    So, the term Fediverse basically refers to the ActivityPub protocol and the associated server software. Technically, it’s not just ActivityPub, but also the AT protocol and nostr. Another layer to the Fediverse, at least in my mind, is having some federation. Meaning Bluesky isn’t apart of the Fediverse, even though it’s built on the AT Protocol, because of it’s isolation. Since there’s no interaction with Lemmy, Mastodon, PixelFed, or other federated social networks, it’s not part of the Fediverse.

    • m_f@discuss.onlineOP
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      2 months ago

      It seems like you’d say that Matrix isn’t included? It’s not ActivityPub/AT/nostr

      • Frisbeedude@feddit.org
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        2 months ago

        Matrix is not federated, it has nothing to do with the whole ActivityThing. They are two separate universes. Maybe there are bridges that I don’t know of, but essentially they are not interconnected.

        • m_f@discuss.onlineOP
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          2 months ago

          It’s federated, just not to the ActivityPub universe, right? People have been able to join rooms on discuss.online using their matrix.org accounts, which to me counts as federated.