This separation of concerns in MVC facilitates simpler modularization of an applicationâs functionality and enables:
Easier overall maintenance. When updates need to be made to the application it is very clear whether the changes are data-centric, meaning changes to models and possibly controllers, or merely visual, meaning changes to views.
Decoupling models and views means that it is significantly more straight-forward to write unit tests for business logic.
Duplication of low-level model and controller code (i.e., what we may have been using instead) is eliminated across the application.
Depending on the size of the application and separation of roles, this modularity allows developers responsible for core logic and developers working on the user interfaces to work simultaneously.
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