The @Component, @Service, @Repository, and @Controller annotations are used in Spring Boot for component scanning and dependency injection. @Component is a generic annotation, while @Service is for business logic/service components, @Repository for data access objects, and @Controller for handling HTTP requests.
Although they have distinct roles, they all facilitate Spring's dependency injection. When you choose the appropriate annotation, you actively enhance clarity and structure within the codebase. It is important to note that Spring treats these annotations in a similar manner for component scanning and dependency injection, ensuring consistent functionality.