I’d argue he’s not. A fediverse is any network of federated instances that are able to communicate with each other. AP is a way of achieving that, but there are plenty other federation protocols.
The fediverse was a term that started colloquially between users before the space had a name for itself. There were a handful of servers running the Laconica software about 13 years ago, the servers were federating with a protocol called OStatus. Laconica morphed into StatusNet which became GNU Social (who only recently added support for ActivityPub)
Things that are not part of the fediverse and never have been but are federated (and could be called universes of their own): XMPP, Email, Matrix, Pump, Tent and Diaspora but this one has some edge cases that make the situation more complicated.
I’d argue he’s not. A fediverse is any network of federated instances that are able to communicate with each other. AP is a way of achieving that, but there are plenty other federation protocols.
The fediverse was a term that started colloquially between users before the space had a name for itself. There were a handful of servers running the Laconica software about 13 years ago, the servers were federating with a protocol called OStatus. Laconica morphed into StatusNet which became GNU Social (who only recently added support for ActivityPub)
Things that are not part of the fediverse and never have been but are federated (and could be called universes of their own): XMPP, Email, Matrix, Pump, Tent and Diaspora but this one has some edge cases that make the situation more complicated.