Discover how you can leverage dependency injection to make your Unity projects more modular, testable, and maintainable. This guide compares the top DI frameworks for Unity, explains best practices, and provides practical code examples for each major library. Dependency Injection in Unity: Libraries, Comparisons, and Best Practices Dependency Injection (DI) is a software design pattern that enables the decoupling of object creation from object usage. In Unity, DI can help manage complex dependencies—especially as projects scale—by reducing reliance on singletons and manual reference passing.