OpenID Connect (OIDC) is an identity layer built on OAuth 2.0 that enables applications to verify a user’s identity and obtain basic profile information. It matters because applications often need both delegated authorization and a standardized way to understand who signed in.
What is OpenID Connect (OIDC)?
OIDC adds identity-focused standards such as ID tokens and user information flows on top of OAuth 2.0. It is widely used for modern login systems, federated authentication, SaaS integrations, and web or mobile sign-in experiences.
What OpenID Connect (OIDC) Commonly Supports
Common uses include single sign-on, modern web login, mobile authentication, federated identity, and identity-aware app integration.
OpenID Connect (OIDC) vs. Plain OAuth 2.0
OAuth 2.0 focuses on delegated authorization. OIDC adds a standardized identity layer for authentication and user claims.
Frequently Asked Questions
Why is OIDC important?
Because it provides a consistent and widely adopted way for applications to handle modern sign-in.
Does OIDC replace all federation models?
No. Other federation standards still exist, but OIDC is now common in many cloud and app ecosystems.
