OIDC

OpenID Connect or OIDC is an identity protocol that utilizes the authorization and authentication mechanisms of OAuth 2.0. The OIDC final specification was published on February 26, 2014, and is now widely adopted by many identity providers on the Internet.

OIDC was developed by the OpenID Foundation, which includes companies like Google and Microsoft. While OAuth 2.0 is an authorization protocol, OIDC is an identity authentication protocol and may be used to verify the identity of a user to a client service, also called Relying Party. In addition, users’ claims like, for example, name, email address, etc., may also be shared on request.