Foundations of Dependency Management

Define what a dependency is and identify dependencies in a given C# class.

Explain the concepts of tight and loose coupling, demonstrating how direct dependency creation leads to tight coupling.

Define the core terminology: Service, Dependency Graph (Object Graph), and Composition Root.

Describe the purpose of Pure DI (manual dependency wiring) and explain what a DI container automates.

Distinguish between the Dependency Injection pattern and the Service Locator pattern, and articulate why DI is generally preferred.