Java: Inversion of Control (IoC)

Spring Boot auto-configuration reduces boilerplate setup by automatically configuring beans based on the classpath.

Auto-configuration in Spring Boot simplifies setup by automatically creating and configuring beans based on the library dependencies present in the classpath. For instance, if you have `spring-web` on your classpath, Spring Boot will automatically configure a `DispatcherServlet` for you, making it easy to start building a web application without manual setup.