What is OpenID Connect?
OpenID Connect is an authentication protocol that is built on top of OAuth 2.0. It allows users to authenticate with an external identity provider (such as Google or Facebook) and for that identity provider to provide information about the user's identity to the client.
OpenID Connect is used to authenticate users to clients and to provide information about the user's identity to the client. It works by having the client redirect the user to the identity provider's authorization server, where the user can authenticate and grant access to their information. If the user grants access, the authorization server sends an ID token to the client, which contains information about the user's identity. The client can then use this ID token to authenticate the user and to get additional information about the user from the user info endpoint.
OpenID Connect allows clients to authenticate users and get information about their identity in a secure and standardized way. It is used by many popular websites and is supported by a wide range of identity providers.