Java: Inversion of Control (IoC)

@ComponentScan automatically detects and registers beans annotated with @Component in specified packages.

The @ComponentScan annotation in Spring Boot is used to specify the packages that the container should scan for components. This helps in automatically detecting and registering beans without needing explicit configuration. For instance, if you have multiple services spread across packages in an e-commerce application, using @ComponentScan ensures they're all discovered and managed by the Spring container.