Software Design Principles¶

The following principles are considered best practices and are good to know when you develop extensions for TYPO3.

• Object-Oriented Programming (OOP) organizes software design around data, or objects, rather than the functions and logic of procedural programming.
• Domain-Driven Design (DDD) is a collection of principles and patterns that help developers design elegant code around clearly defined conceptual models.
• Model-View-Controller (MVC) is a programming paradigm that leads to clear isolation of data, presentation layer, and business logic.
• Test-Driven Development (TDD) is a basic technique for generating code that is stable, resilient to errors, and legible — and therefore maintainable.
• Dependency Injection is a software design pattern that adds flexibility by removing the need for hard-coded dependencies.
• Separation of Concerns and Single-responsibility principle (SRP) are computer programming principles that help developers create modular, coherent, and maintainable software.

We also recommend to study common software design patterns.