Spring MVC is a framework within the Spring Framework that helps developers build web applications in a structured way. It follows the Model-View-Controller (MVC) design pattern, which separates the application into three interconnected components: the model (data), the view (user interface), and the controller (business logic). This separation makes it easier to manage and scale applications. In Spring MVC, the controller handles incoming requests, processes them, and returns the appropriate view. It also integrates seamlessly with other Spring features, such as dependency injection and aspect-oriented programming, enhancing the overall development experience and promoting best practices in web application design.