If you are building an application that has a lot of modules and those modules can be plugged in dynamically then you will probably want to use inversion of control (IoC).

What can inversion of control do for you?

  • help you deal with the configuration of all the modules
  • a one “single point change” so you wont have to hunt down every other place where things could go wrong
  • help with transparency as you just have to use a module and not worry how it is implemented
  • provide a nice way to have strong contracts (due to interfaces)
  • finally, the application can change it’s own behavior when it believes it is necessary at runtime

If you want to learn more I would recommend reading the the famous article written by Martin Fowler.