https://medium.com/@JimmyMAndersson/ios-development-and-the-wrong-kind-of-mvc-4e3e2decb82e

When starting out as an iOS Developer, you get to hear a lot about the MVC (Model-View-Controller) Pattern and how it’s the best when developing mobile applications. The MVC Pattern is a good way to think about certain problems when it comes to developing applications with a graphical user interface. It provides you with a way of thinking that lets you split your code into manageable packages, where each package will handle its own problem domain.

There are three different conceptual packages in MVC that are supposed to handle problems like so: