Symfony is a robust PHP framework that simplifies and accelerates the process of building web applications. Known for its flexibility, scalability, and extensive set of reusable components, Symfony has become a popular choice among developers for creating high-quality and maintainable projects. In this article, we will delve into the fundamentals of Symfony, exploring its key features, installation process, essential concepts such as routing and controllers, templating with Twig, working with databases using Doctrine ORM, and strategies for testing and debugging Symfony applications.