Here are Pros of Auto-Configuration in Spring Boot:

1. Simplified configuration:

Auto-configuration automatically configures beans and settings based on the presence of dependencies in the classpath, reducing the need for manual configuration. This simplifies the configuration process and reduces boilerplate code.

2. Faster development:

Auto-configuration allows developers to quickly set up a fully functional application with sensible default settings, enabling faster development and prototyping. It eliminates the need to spend time on manual configuration and allows developers to focus on writing business logic.

3. Flexibility

Auto-configuration in Spring Boot provides flexibility to override default settings and customize the behavior of beans as needed. Developers can specify their own configuration properties or provide custom configuration classes to customize the auto-configured beans according to their requirements.

4. Consistency

Auto-configuration promotes consistency across Spring Boot projects by providing standardized configuration patterns for different components. This ensures that similar components in different projects follow the same configuration conventions, making it easier to maintain and understand the configuration across different projects.

There is no free lunch, everything comes at the cost of something and auto-configuration is no exception