@EnableAutoConfiguration annotation auto-configures the beans that are present in the classpath. This simplifies the developers work by guessing the required beans from the classpath and configure it to run the application. This annotation is part of the spring boot project. For example, if you have tomcat-embedded.jar in the classpath, then you will need a TomcatEmbeddedServletContainerFactory […]

@SpringBootApplication annotation is a convenience annotation introduced from Spring Boot 1.2.0. If you have worked on the earlier spring boot versions, it is common that main class always annotate with the following annotations: @Configuration : This annotation is not specific to the spring boot applications. This annotation tags the class as the source for bean definitions. […]