Consider a production Laravel application that needs to use Dependency injection. How should the developer approach the requirement, and what should be checked before releasing it?

Consider a production Laravel application that needs to use Dependency injection. How should the developer approach the requirement, and what should be checked before releasing it? Assume the system receives real users, real data and concurrent requests. The correct approach is to identify where dependency injection belongs, define its inputs and outputs, protect the boundary with validation and authorization where applicable, consider database and performance implications, and add automated tests for the expected behavior. Concept-specific reasoning: Controllers can receive services and framework dependencies through constructor or method injection. A useful implementation pattern is: class ProductController extends Controller { public function show(Product $product) { return view('products.show', compact('product')); } }