Auth0

Auth0 is customer identity and access management for developers building customer-facing apps, owned by Okta since 2021.

Auth0 is customer identity and access management (CIAM) software for developers building customer-facing web, mobile and API applications. It handles sign-up, login and the user database, so a team does not build authentication itself. Okta owns Auth0, and the acquisition completed on 2021-05-03. The Auth0 name, the auth0.com site and a separate pricing page all continue under Okta. Universal Login is the hosted login and signup page, which can be customized with partials and served from a custom domain. Social login covers providers such as Google, and passwordless sign-in covers passkeys and one-time codes. Multi-factor authentication comes as Pro MFA and Enterprise MFA. Actions run custom code during signup, login and token issuance, and Organizations model each business customer with its own members. Enterprise Connections and Self-Service SSO let a customer admin set up a SAML or OIDC connection without Dashboard access, and progressive profiling gathers extra profile data on later logins. Auth0 fits developers and product teams adding login to a new customer-facing app, and B2B SaaS companies that give each business customer its own single sign-on connection. It also suits teams moving users off a legacy store, since bulk import and gradual migration on login are built in, and the B2C Professional plan can use an existing user database for logins. Employee sign-in belongs to Okta's separate workforce identity product. Auth0 is bought by plan (Free, Essentials, Professional and Enterprise) in a B2C or a B2B version under one login, scaled by monthly active users, so the tier a team lands on follows its user count. Teams use Auth0 for customer login and signup, enterprise SSO for B2B customers, passwordless sign-in and user migration. Account linking merges a social login and an email account into one customer identity. Log streaming sends audit logs to Datadog, Splunk, AWS and Azure, and event streams deliver identity events by webhook, AWS EventBridge or an Action. Machine-to-machine tokens, issued through the client credentials flow, cover service-to-service calls to an API. Bulk user import loads a JSON file of users into a database connection, which suits a move from an older login system.