OpenID Connect

OpenID Connect is an identity layer built on top of the OAuth 2.0 authorization framework, enabling clients to verify the identity of end-users based on authentication performed by an authorization server. It provides a standardized way for applications to obtain basic profile information about users in a secure and interoperable manner, using JSON Web Tokens (JWTs) to convey identity claims. This protocol is widely used for single sign-on (SSO) and federated identity scenarios across web and mobile applications.

Also known as: OIDC, OpenID, Open ID Connect, OpenID 2.0 (legacy), OpenID Connect 1.0

🧊Why learn OpenID Connect?

Developers should learn and use OpenID Connect when building applications that require secure user authentication and identity verification, such as enterprise SSO systems, consumer-facing apps with social login, or any service needing to integrate with identity providers like Google, Microsoft, or Okta. It simplifies authentication flows by standardizing token-based identity verification, reducing the need for custom authentication code and enhancing security through built-in features like token validation and user consent management.

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Learning Resources

OpenID Connect Specification

Auth0 OpenID Connect Tutorial

OpenID Connect Explained - YouTube

OAuth 2.0 and OpenID Connect in Action

Related Tools

Oauth 2.0 Json Web Tokens Single Sign On Identity Providers Authentication

Alternatives to OpenID Connect

Saml Oauth 1.0a Jwt Authentication

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