Auth0

Auth0, an Okta product unit, is the industry benchmark identity-as-a-service (IDaaS) platform engineered for modern software applications. Built to remove the massive security burdens of credential management, password hashing, and token validation, Auth0 enables engineering teams to implement bank-grade authentication and authorization systems in hours rather than months.

The platform provides Universal Login, a hosted authentication experience that supports username/password combinations, passwordless magic links, biometric WebAuthn passkeys, and social login with dozens of identity providers. Auth0 incorporates AI-powered adaptive multi-factor authentication (MFA) and credential stuffing defense, which analyzes risk signals like IP velocity, impossible travel, and device fingerprints to thwart automated bot attacks.

Auth0 operates globally with SDKs and quickstarts for virtually every programming language and frontend framework, from React and Next.js to iOS, Android, and Java backends. It provides a generous free tier for up to 7,500 monthly active users alongside scalable developer and enterprise plans.