OpenID Connect (OIDC) is an identity authentication protocol that is an extension of open authorization (OAuth) 2.0 to standardize the process for authenticating and authorizing users when they sign in to access digital services.
OpenID Connect enables application and website developers to launch sign-in flows and receive verifiable assertions about users across Web-based, mobile, and JavaScript clients. And the specification suite is extensible to support a range of optional features such as encryption of identity data, discovery of OpenID Providers, and session logout.
OpenID Connect Authorization Code Flow