This tutorial provides a comprehensive guide to creating and deploying a Python-based Azure Function using CircleCI, emphasizing the benefits of serverless computing in simplifying app development by eliminating the need for server management. The tutorial involves setting up the Azure environment by creating a Resource Group, Storage Account, and a service principal for secure deployment, followed by the creation and local testing of a simple HTTP-triggered Azure Function. The function, which is capable of parsing incoming JSON and responding with personalized messages, is tested using the unittest framework to ensure it handles various input scenarios effectively. Furthermore, the tutorial details the continuous integration and deployment setup using CircleCI, where a configuration script automates testing and deployment processes, ensuring that the Azure Function is deployed only after passing unit tests. This streamlined workflow leverages secure credentials and automated pipelines, demonstrating effective continuous delivery to Azure, with all necessary code and configurations available on GitHub for reference.