@csarvenSarven Capadisli Thanks very much, which spec has defined interop and which does not? Feel free to tell me to read some stuff!
@jimJim Killock They're all generally internally consistent and interoperable. My point re authn/z, was that #ActivityPub for example doesn't define particular mechanisms, which is why an independently developed AP-client and AP-server can't talk to each other. Ditto AP-server w/ another AP-server. That's based on spec, as opposed to specific implementations agreeing on terms prior to communication / out of band. What's out there is mostly a software implementation offering both AP-client and AP-server.
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