Azure AD SSO for Auth0 Apps: Step-by-Step Integration Guide

Auth0's B2B Essentials plan offers limited enterprise SSO connections, prompting businesses to either pay for additional connections or implement a separate SSO layer, such as SSOJet, to handle enterprise logins while maintaining existing Auth0 logins for other users. This approach allows enterprises using Microsoft Entra ID, formerly Azure AD, to sign in through a separate SSO broker that communicates with their identity provider using SAML 2.0 or OIDC, enabling seamless integration without migrating existing users from Auth0. SSOJet acts as an OpenID Certified broker that works alongside Auth0, allowing enterprise customers to configure their own Entra ID connections through a self-serve admin portal, reducing the engineering workload associated with per-customer SAML setup. This setup leverages stable, certified protocols and involves implementing an authorization-code flow in the app's code to manage enterprise logins through SSOJet, ensuring that both Auth0 and SSOJet handle specific login scenarios without requiring substantial infrastructure changes. The solution is particularly beneficial for growing B2B SaaS companies onboarding multiple customer IdPs, offering them a streamlined and cost-effective way to add enterprise SSO capabilities.

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