Dependency injection (DI) is a crucial pattern for ensuring application maintainability and testability. These aspects are especially important in enterprise applications, where DI can become significantly more complex to implement effectively. In modular applications developed by multiple teams, DI requires additional consideration to ensure loose coupling and clear dependency definitions while avoiding cumbersome boilerplate. In this talk, we will explore: - DI challenges in enterprise Flutter applications - DI solutions used in a couple of enterprise Flutter projects - The benefits and drawbacks of each approach