But Spring Boot with its embedded HTTP server and internal infrastructure is certainly more than just a framework. It has its own class loade (launchedurlclassloader). See https://dzone.com/articles/spring-boot-classloader-and-class...
Piranha Cloud on the other hand runs Jakarta EE code without any class loader of its own. See https://blogs.oracle.com/javamagazine/post/you-dont-always-n...