버전별로 아래 링크를 타고 들어가서 확인 가능
https://github.com/spring-projects/spring-boot/blob/main/spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
https://github.com/spring-projects/spring-boot/blob/2.5.x/spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories
https://github.com/spring-projects/spring-boot/blob/1.5.x/spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories
더 세세한 버전 변화를 보고 싶다면 github 좌측 화면에 있는 Switch Branch 입력란에서 원하는 버전을 선택하시면 됩니다.
https://stackoverflow.com/questions/77894404/why-did-springboot-move-away-from-spring-factories-to-org-springframework-boo
https://stackoverflow.com/questions/72889500/how-to-find-spring-boot-auto-configuration-classes-that-are-activated-by-adding
https://github.com/spring-projects/spring-boot/blob/v2.7.1/spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports