Auth0 Platform vs Duo Directory: Side-by-Side Comparison (2026)

Auth0 Platform: Developer-focused customer identity platform for authentication & authorization. built by Okta. Core capabilities include Universal Login with customizable branding and UI components, Passwordless authentication, Social login..

Duo Directory: IAM solution with user directory, SSO, MFA, and passwordless authentication. built by Duo Security. Core capabilities include User directory with lifecycle management, Single sign-on (SSO), Phishing-resistant multi-factor authentication..

Both serve the Multi-Factor Authentication and Single Sign-On market but differ in approach, feature depth, and target audience.

Both tools share capabilities in passwordless authentication, single sign-on (sso). Auth0 Platform differentiates with Universal Login with customizable branding and UI components, Social login, Adaptive Multi-Factor Authentication (MFA). Duo Directory differentiates with User directory with lifecycle management, Phishing-resistant multi-factor authentication, Device trust.

Auth0 Platform is developed by Okta. Duo Directory is developed by Duo Security. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Auth0 Platform and Duo Directory serve similar Multi-Factor Authentication and Single Sign-On use cases: both are Multi-Factor Authentication and Single Sign-On tools, both cover MFA, Single Sign On, Authentication. Review the feature comparison above to determine which fits your requirements.