Symfony is a popular, open-source PHP web application framework that follows the Model-View-Controller (MVC) architectural pattern. It provides a set of reusable components, libraries, and tools for building web applications, including form creation, security, routing, and templating. Symfony's modular architecture allows developers to easily integrate third-party libraries, making it a flexible and extensible framework. Symfony also includes a powerful command-line interface (CLI) tool called the Console, which can be used for tasks such as database migrations and code generation. Symfony is known for its robustness, scalability, and community support, making it a popular choice for building complex and large-scale web applications.

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