Spring Boot uses SnakeYAML for parsing YAML files during application startup.SnakeYAML converts YAML content into a tree of Java values like Maps and Lists.The parsed YAML content is then flattened into dot-separated keys for easy access.Spring Boot merges multiple YAML files like application.yml and profile-specific files into a single configuration view.Profiles in Spring allow for loading configuration files based on the active profile.@ConfigurationProperties annotation is used to bind YAML values to Java classes.Spring can handle complex YAML structures, nested objects, lists, and maps.Proper YAML formatting is crucial for successful binding and type safety.Starting from Spring Boot 2.2, constructor-based binding with @ConstructorBinding is supported.Understanding YAML processing in Spring Boot helps in troubleshooting configuration-related issues.