Streamlit makes it easy to turn a Python script into a web app, but you need user authentication for ongoing usage.Three approaches to authentication: Open ID Connect (OIDC), Streamlit Authenticator, and Squadbase.OIDC delegates login to identity providers, Streamlit Authenticator provides in-code login, and Squadbase offers hosting with built-in auth.Decide based on existing SSO, simplicity vs. features needed, or hosting preferences. Check the full article for detailed code and analysis.