Auth0 ranks #1 in Authentication & Identity AI search.

Auth0, now a product unit of Okta, Inc., is a developer-first identity-as-a-service (IDaaS) platform that enables organizations to add authentication and authorization to web, mobile, and legacy applications. Founded in 2013 by Eugenio Pace and Matias Woloski and acquired by Okta for $6.5 billion in May 2021, Auth0 processes over 10 billion authentications per month at 99.99% uptime. The platform offers Universal Login, SSO, MFA, passwordless authentication, fine-grained authorization, and machine-to-machine auth, supported by 30+ SDKs and an extensible Actions and Marketplace ecosystem. Auth0 serves startups, mid-market, and global enterprises across B2C and B2B SaaS use cases, with recent expansion into securing AI agent workflows via its Token Vault and async authorization capabilities.

Auth0 by Okta is a cloud-based Customer Identity and Access Management (CIAM) platform that provides authentication, authorization, and user management as a service. It allows developers to integrate secure login, SSO, MFA, and passwordless flows into any application via SDKs, APIs, and a low-code extensibility layer (Actions and Forms), while offering enterprise features such as multi-tenancy, SCIM provisioning, fine-grained authorization, and AI agent authentication support.