How does Symfony support modular development and scalability?

The main advantages of Symfony lie in its component-based nature. It supports modular development and scalability by considering the addition of more features as a project grows. Each functionality, from routing to templating and security, which is a standalone module, can be customized or replaced, assuring flexible and efficient development. Symfony’s bundles, actually plugins, assure reusability and seamless integration of new features without disrupting existing code. Furthermore, the modular structure and strict coding standards ensure that Symfony applications scale well without compromising on maintainability as they grow in complexity.