From Wikipedia : "the third generation of OpenID technology, OpenID Connect, is an authentication layer that sits on top of the OAuth 2.0 authorization framewor

From Wikipedia : "the third generation of OpenID technology, OpenID Connect, is an authentication layer that sits on top of the OAuth 2.0 authorization framework.[82] It allows computing clients to verify the identity of an end-user based on the authentication performed by an authorization server, as well as to obtain the basic profile information about the end-user in an interoperable and REST-like manner. In technical terms, OpenID Connect specifies a RESTful HTTP API, using JSON as a data format. OpenID Connect allows a range of organizations, including web-based, mobile and JavaScript clients, to request and receive information about authenticated sessions and end-users". My favorite implementation: Keycloak.