The @SpringBootApplication annotation is a convenience annotation in Spring Boot that combines three important annotations to simplify the setup of a Spring Boot application:

  1. @SpringBootConfiguration: Marks the class as a Spring configuration class.
  2. @EnableAutoConfiguration: Tells Spring Boot to automatically configure application components based on the classpath and settings.
  3. @ComponentScan: Enables component scanning, allowing Spring to find and register beans in the application context.

In summary, @SpringBootApplication simplifies Spring Boot application setup by combining key annotations, enabling auto-configuration, component scanning, and configuration capabilities in one.