Laravel Service Container: Dependency Injection Mastery

The service container is powerful:

Binding Interfaces to Implementations

$this->app->bind(PaymentInterface::class, StripePayment::class);

Singleton Binding

$this->app->singleton(ApiClient::class, function ($app) {
    return new ApiClient(config('api.key'));
});

Contextual Binding

$this->app->when(ReportController::class)
    ->needs(ReportInterface::class)
    ->give(PdfReport::class);

Dependency injection makes your code more maintainable and testable.