Auth0

Auth0 is an identity and access management platform founded in 2013 by Eugenio Pace and Matias Woloski, headquartered in Bellevue, Washington, acquired by Okta in 2021 for six and a half billion dollars, providing authentication, authorization, and user management as a service with support for over thirty social identity providers, enterprise SAML and OIDC connections, multi-factor authentication, passwordless login, and bot detection, serving over ten thousand enterprise customers including Siemens, AMD, Atlassian, and Purdue University. The universal login provides hosted, customizable authentication pages that handle sign-in, sign-up, password reset, multi-factor verification, and account linking, with branding through custom HTML, CSS, logos, and localization in over twenty languages, reducing the development burden of building and maintaining authentication UI while maintaining security best practices. The multi-factor authentication supports TOTP authenticator apps, SMS codes, email codes, push notifications through the Guardian app, biometric verification through WebAuthn and Touch ID, and recovery codes, with adaptive MFA that adjusts requirements based on risk signals including new device, new location, and impossible travel detection. The social and enterprise connections provide pre-built integrations for Google, GitHub, Microsoft, Apple, Facebook, LinkedIn, and dozens of other social providers, plus SAML and OIDC for enterprise single sign-on with Active Directory, Azure AD, Google Workspace, and Ping Identity. The anomaly detection blocks credential stuffing, brute force, and suspicious login attempts. The Actions extensibility enables custom JavaScript logic during authentication flows. The organizations feature enables B2B multi-tenancy. Designed for development teams, CISOs, and enterprises needing centralized identity management.