Streamlit's increasing popularity as a tool for creating interactive data applications has led to a growing need for effective authentication and single sign-on (SSO) solutions to protect sensitive data and streamline user access. This tutorial, authored by software engineer and technical writer Gideon Idoko, guides users through integrating Descope, a versatile authentication and user management platform, with Streamlit applications to enhance security and user experience. The process involves setting up Descope, creating a simple Streamlit app, implementing OAuth social logins, and configuring SAML SSO, using Okta as an identity provider. By following the detailed steps, users can manage user roles and permissions and enforce access control within their applications, ensuring that only authorized users access specific features. The tutorial underscores the importance of securing applications and provides insights into leveraging Descope for seamless authentication, enhancing both security and user convenience.