Inversion of Control, or IoC, is a technique that allows control to be inverted when compared to classical procedural code. The most prominent form of IoC is, of course, Dependency Injection, or DI. Laravel's IoC container is one of the most used Laravel features, yet is probably the least understood.

http://code.tutsplus.com/tutorials/digging-in-to-laravels-ioc-container--cms-22167