How does AngularJS handle dependency injection?

At its core, dependency injection in AngularJS is a design pattern that allows a component or function to receive its dependencies from an external source rather than creating them internally. This means that when we define components, such as controllers, services, or directives in AngularJS, we don't hard-code their dependencies. Instead, we list these dependencies as parameters in the component's definition, and AngularJS takes care of instantiating and injecting them at runtime.

The benefits of this approach are manifold. Firstly, it promotes a decoupled architecture. By injecting dependencies, components don't need to know where their dependencies come from or how they are created. This separation of concerns makes the system more...