Dependency Injection (DI) is a design pattern that helps us develop loosely coupled, maintainable, and testable code. DI is a form of Inversion of Control (IoC), where the control of creating objects is transferred from the class itself to a container or framework. It allows us to inject dependencies, i.e., the objects that a class needs to function, into the class, either through the constructor, a property, or a method. There’s a powerful framework in dotnet that helps us with this called Autofac!