What is Spring Boot?
Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can "just run". We take an opinionated view of the Spring platform and third-party libraries so you can get started with minimum fuss. Most Spring Boot applications need very little Spring configuration.
Spring Boot is a tool in the Frameworks (Full Stack) category of a tech stack.
Why developers like Spring Boot
Powerful and handy
Lots of "off the shelf" functionalities