Build

The build definition is composed of several elements under the build tag; for example, the source and test folders for our project, so the compiler can find them.

The different Maven plugins will be configured within the plugins tag.

Mainly, we can see two plugins included, spring-boot Maven plugin, as no version is specified it will be determined by the default version on the BOM, and the Kotlin Maven plugin to build our Kotlin code. When we compile, we can see a dependency for the compiler plugin is included called all-open, that is required by Spring.