Comment by ForHackernews
8 months ago
The naming is a complete nightmare.
OpenID Connect is an extension to OAuth2 (RFC 6749) that adds an authentication layer (to identify a user) on top of the OAuth2 authorization framework (that grants permissions)
Earlier versions of OAuth (1.0 and 1.0a) and OpenID (1 and 2) are unrelated, incompatible protocols that share similar names but are largely irrelevant in 2024.
Google with care.
Also "OpenID Connect" sounds like some sort of branded product rather than a technical standard.