dependencies injection

Dependency injection is a design pattern used in software development to improve modularity and flexibility. Instead of a component creating or controlling its dependencies directly, these dependencies are provided or 'injected' from outside, typically by a framework or manager. This approach allows components to be more easily tested, maintained, and reused, because their dependencies can be changed or replaced without modifying their internal code. In simple terms, it’s like supplying a tool to a worker instead of having the worker build their own tools, making the system more adaptable and easier to manage.