Extbase
Extbase is a framework for the TYPO3 content management system that enables developers to build modern, object-oriented extensions using the Model-View-Controller (MVC) pattern. It provides a structured approach to development with features like dependency injection, domain modeling, and fluid templating, making it easier to create scalable and maintainable TYPO3 applications. The framework is part of the TYPO3 core and is widely used for custom extension development in the TYPO3 ecosystem.
Developers should learn Extbase when working with TYPO3 to build custom extensions that require complex business logic, data handling, or user interactions, as it enforces best practices and reduces boilerplate code. It is particularly useful for projects needing scalable solutions, such as e-commerce platforms, member management systems, or data-driven websites, where the MVC pattern improves code organization and testability. Using Extbase ensures compatibility with TYPO3's core features and community standards, facilitating easier maintenance and collaboration.