Spring Boot and Spring MVC, both integral to the Spring Framework, serve distinct yet complementary roles in web application development. Spring Boot, an extension of the Spring Framework, enables rapid development of production-ready applications through auto-configuration, eliminating the need for separate web server installation and manual configuration. It simplifies the setup process by bundling dependencies and configurations, thus saving time and effort. Conversely, Spring MVC is a core library of the Spring Framework, designed to manage HTTP requests and responses via the Model-View-Controller (MVC) pattern, which promotes separation of concerns and modular application development. While Spring Boot streamlines the development process by wrapping dependencies into a single unit, Spring MVC offers flexibility and control, making it ideal for projects requiring customized configurations. Using both together can enhance productivity by combining Spring Boot's ease of setup with Spring MVC's detailed control over HTTP handling, though developers must weigh the benefits of Spring Boot's opinionated configurations against Spring MVC's steeper learning curve.