Spring Boot provides a wide range of annotations that help developers streamline the development process and configure various aspects of their applications. These annotations are used to enable specific features, define configurations, handle requests, manage dependencies, and more. Here are some of the most commonly used Spring Boot annotations:

1. @SpringBootApplication:

This annotation is the starting point of a Spring Boot application. It combines three annotations: `@Configuration`, `@EnableAutoConfiguration`, and `@ComponentScan`. It enables auto-configuration, component scanning, and configuration capabilities for your application.

2. @RestController:

Used to annotate a class that acts as a RESTful controller. It combines the `@Controller` and `@ResponseBody` annotations. This annotation eliminates the need for annotating every request-handling method with `@ResponseBody` and allows you to return the response directly from the method.

3. @RequestMapping:

This annotation is used to map HTTP requests to specific methods or classes. It is typically used at the class level to define a common base path for all methods within the class. At the method level, it maps specific HTTP methods and request paths to corresponding methods.

4. @Autowired:

Used to inject dependencies into a class. It can be applied to fields, constructors, and methods. Spring Boot uses autowiring to automatically wire beans together, eliminating the need for explicit bean configuration.

5. @Value:

This annotation is used to inject values from external properties files or environment variables into variables within a class. It can be used to inject simple values, as well as complex types and arrays.

6.@Configuration:

This annotation indicates that a class defines one or more Spring Bean configuration methods. It is typically used in combination with `@Bean` to define beans that are managed by the Spring IoC container.

7. @EnableAutoConfiguration:

This annotation enables Spring Boot’s auto-configuration mechanism. It allows Spring Boot to automatically configure beans based on the classpath dependencies and properties defined in the application’s configuration.

8. @ComponentScan:

This annotation is used to enable component scanning, which allows Spring Boot to automatically discover and register beans based on classpath scanning. It scans the specified packages and their sub-packages to locate components, services, and repositories.

9. @EnableCaching:

Used to enable Spring Boot’s caching support. It activates the caching infrastructure and provides caching capabilities for methods within the annotated class.

10. @Transactional:

This annotation is used to mark a method or class as transactional. It ensures that the annotated method(s) are executed within a transactional context, allowing for ACID (Atomicity, Consistency, Isolation, Durability) properties when working with databases or other transactional resources.

These are just a few examples of the many annotations provided by Spring Boot. Each annotation serves a specific purpose and helps simplify and configure various aspects of your application. By leveraging these annotations, developers can rapidly build and configure Spring Boot applications with minimal effort and manual configuration.