In Spring Boot, the @SpringBootApplication annotation is commonly used to denote the main class of a Spring Boot application, and it implicitly includes the @EnableAutoConfiguration, @ComponentScan, and @Configuration annotations. The @SpringBootApplication annotation is often used in conjunction with the SpringApplication.run() method. Here's an example: Java import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class MySpringBootApplication { public static void main(String[] args) { SpringApplication.run(MySpringBootApplication.class, args); } } In this example, the MySpringBootApplication class is annotated with @SpringBootApplication, and the main method uses SpringApplication.run() to launch the Spring Boot application. The @SpringBootApplication annotation is a composite annotation that combines several annotations: @EnableAutoConfiguration: Enables Spring Boot's auto-configuration feature. @ComponentScan: Enables component scanning to discover and register beans in the application context. @Configuration: Marks the class as a configuration class, allowing it to define beans. Reference: