Connect Azure App Service to Azure SQL Database Using a User-Assigned Managed Identity (Python + pyodbc)

This article explains how to securely connect an Azure App Service (running a Python FastAPI app with pyodbc) to Azure SQL Database using a User-Assigned Managed Identity (UAMI). It covers the concept of managed identities, compares the old password-based approach with the new passwordless UAMI method, and provides step-by-step guidance. The tutorial emphasizes security best practices, such as avoiding hardcoded credentials and using Azure Entra ID for authentication. Topics include creating a UAMI, assigning it to an App Service, configuring the ODBC driver with ActiveDirectoryMsi authentication, and granting database permissions. Ideal for developers seeking to enhance Azure application security and reduce operational overhead.