Auth0
Auth0 is an identity-as-a-service platform that provides drop-in authentication and authorization for applications, supporting social logins, single sign-on (SSO), multi-factor authentication (MFA), and passwordless login.
Definition
Auth0 is an identity-as-a-service platform that provides drop-in authentication and authorization for applications, supporting social logins, single sign-on (SSO), multi-factor authentication (MFA), and passwordless login.
Overview
Auth0 was founded in 2013 by Eugenio Pace and Matías Woloski to give developers a way to add secure login without building identity infrastructure themselves. It was acquired by Okta in 2021, though it continues to operate as a distinct developer-focused product. Its Universal Login feature provides a customizable hosted login page, and it supports OAuth, OIDC, and SAML protocols alongside social identity providers, enterprise SSO, and rules or actions for customizing the login flow. It's commonly integrated into applications built with frameworks like Next.js or Express.js. Auth0 competes with open-source alternatives such as Keycloak, Ory, and Zitadel, as well as newer developer-first options like Clerk, and sits within the broader application-security topics covered in the Cloud Security Fundamentals course.
Key Features
- Universal Login: a customizable, secure hosted login page
- Social login support for Google, GitHub, and dozens of other providers
- Enterprise SSO via SAML, OIDC, and Active Directory/LDAP connectors
- Multi-factor authentication (MFA) and passwordless login options
- Rules and Actions for customizing authentication flows with code
- Role-based access control and fine-grained permissions