This blog post explains how to implement Single Sign-On (SSO) for a Neo4j instance using Auth0, an external authentication system. SSO allows users to access multiple applications with their existing credentials and centralize user management. The authors of the post describe how they use OAuth 2.0, OpenID Connect, and JWT (JSON Web Tokens) to implement SSO for Neo4j Sandbox. They also provide a step-by-step guide on configuring the Neo4j instance with Auth0 using Docker. The process involves creating an environment file, setting up authentication providers, customizing login button text, and allowing access to the web application on port 7474 from the IdP's settings. With this setup, users can log in to their Neo4j instance by selecting SSO in their browser application.