Spring Boot hides needing to deploy to an application server along with the extra configuration that entails, it doesn't hide Spring from you. There's still a

Spring Boot hides needing to deploy to an application server along with the extra configuration that entails, it doesn't hide Spring from you. There's still a ton of "enterprise-grade" shit in Spring, you just aren't forced to use it if you don't want - but it's always there, lurking behind the scenes.