The POM hierarchy

POM files maintain a parent-child relationship between them. A child POM file inherits all the configuration elements from its parent POM file. This is how Maven sticks to its design philosophy, which is convention over configuration. The minimal POM configuration for any Maven project is extremely simple, which is as follows:

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.packt</groupId>
  <artifactId>sample-one</artifactId>
  <version>1.0.0</version>
</project>