Spring MVC implements a clear separation of concerns that allows us to develop and unit test our applications easily.
The concepts like :
* Dispatcher Servlet
* Controllers
* View Resolvers
* Views, Models
* ModelAndView
* Model and Session Attributes
are completely independent of each other, and they are responsible for one thing only.
Therefore, MVC gives us quite big flexibility. It's based on interfaces (with provided implementation classes), and we can configure every part of the framework by using custom interfaces.
Another important thing is that we aren't tied to a specific view technology (for example, JSP), but we have the option to choose from the ones we like the most.
Also, we don't use Spring MVC only in web applications development but in the creation of RESTful web services as well.
