Auth0

Auth0 operates an identity and authentication platform that lets organizations centrally manage user access to applications and services. The platform aims to make every login "effortless" in order to reduce drop-off during sign-in.

Core features include user authentication for web apps, mobile applications, and APIs; passwordless and social login options; enterprise SSO and SCIM support for B2B scenarios; fine-grained authorization for controlling user and increasingly agent access; and multi-factor authentication with adaptive security. According to the company, Auth0 blocks more than 3 billion attack attempts per month and processes over 23 billion authentications monthly at 99.99% availability over a 12-month average.

Important context: Auth0 is part of Okta, Inc. and functions as its customer identity and access management (CIAM) solution - no longer an independent company, but a product line within the larger Okta organization.

The business model is tiered: a free entry plan, paid scaling plans, enterprise offerings, and special pricing for startups and nonprofits. The target audience spans B2C applications, B2B SaaS, and enterprises that increasingly also need to secure authentication for AI agents.

Auth0 was originally founded as an independent company in 2013 and was acquired by Okta in 2021 for approximately $6.5 billion - one of the largest acquisitions in the identity and access management space at the time.