Inversion of Control (IoC) and Dependency Injection (DI) are related concepts, but they are not the same thing. Question. Is Dependency Injection the same as Inversion of Control? Answer: No. IoC is a principle, while DI is one way to implement that principle. 1. What is Inversion of Control (IoC)? Normally, an object creates and manages its own dependencies. Without IoC public class OrderService { private PaymentService paymentService ; public OrderService () { paymentService = new PaymentService (); } public void placeOrder () { paymentService . processPayment (); } } Enter fullscreen mode Exit fullscreen mode What happens here? paymentService = new PaymentService(); OrderService is responsible for: Creating the dependency Managing the dependency Using the dependency The control is inside OrderService Problem Suppose tomorrow you want: CreditCardPaymentService instead of PaymentService You must modify: OrderService This creates tight coupling.…