this post was submitted on 24 Sep 2024
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Privacy
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Matrix isn’t ActivityPub ∴ not a part of the fediverse
It is federated, just with other Matrix protocol servers. Just like how email is federated.
Being federated isn’t the same as living in the same Fediverse. You can upvote a Lemmy post from Mastodon since they both use ActivityPub but you can’t do that with a Matrix account. There are a couple of different ActivityPub-like generalized protocols out there, but none of them are near the size of ActivityPub & Lemmy is ActivityPub so for all intents & purposes for this conversation the Fediverse here (& most places) is ActivityPub. Matrix is on an entirely different federated network & they aren’t related.
I do agree that generally when we refer to the fediverse, we mean ActivityPub federation. I also just wanted to point out that ActivityPub is not synonymous with fediverse.
I think I need to read up on the fediverse a bit more. Technically it looks like anything in the fediverse at the moment is ActivityPub, even though it supports 3 more protocols. At this point, only Hubzilla uses something other than ActivityPub, even though it also makes use of AP. I was confused because Matrix is also an open protocol and also federated. I had figured everything federated could talk to each other underneath... That'd be the dream, right?
I mean we already had the universal protocol last decade in an extensible markup language, but the next generation decided we needed to rewrite everything in a JSON schema that isn’t as easy to extend as XMPP. It’s federated/decentralized, has many chat clients, some social media + community managing platforms (Movim & Libervia), used for video conferencing (Jitsi & Zoom), negotiation matchmaking for games (most of them), displaying friend roster status updates (Nintendo, & many other systems). This would have (& can still be) the dream instead of needing to reinvent everything.
Worth reading: https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html
Hmm okay. I've logged into Element with my lemmy.world account though
OAuth or SSO is not the same as communicating over the same protocol. You can also log in with Google, Facebook, Apple, GitLab, Microsoft GitHub, & others on different platforms as SSO options… clearly these are not the Fediverse.