Auth0

What it is

Auth0 (Auth0 by Okta) is a cloud customer identity and access management (CIAM) platform for adding login, signup, social connections, SSO, MFA and authorization to applications. Developers embed Auth0 SDKs and APIs rather than building identity infrastructure from scratch, with Free, Essentials, Professional and Enterprise plans priced mainly by monthly active users (MAUs).

What it helps with

- Shipping secure login experiences with Universal Login, passwordless and passkeys.
- Connecting social identity providers and enterprise federation (SAML, OIDC) where planned.
- Enforcing MFA and attack protection to reduce account takeover risk.
- Modelling B2C and B2B organisations with roles, permissions and APIs.
- Customising branding and domains for a first-party look and feel.
- Scaling from Free evaluation tiers into paid Essentials, Professional or Enterprise contracts.

Who it's for

Application developers, identity architects and product teams building customer or partner-facing apps that need managed authentication without operating a full IAM stack in-house.

Worth knowing

Auth0 is part of Okta's Customer Identity Cloud. Official pricing lists a Free plan (up to 25,000 MAUs) plus paid B2C and B2B tiers; Enterprise is quote-based. Distinct from Okta Workforce Identity (already listed separately on this directory as Okta). Check auth0.com/pricing for current MAU limits and feature matrices. This listing summarises publicly documented Auth0 capabilities for authorised application identity use.