Project Object Model is the basic unit of Maven and defines the project structure, dependencies, etc.
The following are very minimal to create a POM:
project rootmodelVersion – should be set to 4.0.0groupId – the ID of the project's groupartifactId – the ID of the artifact (project)version – the version of the artifact under the specified groupgroupId, artifactId and version are called Maven coordinates and sometimes abbreviated with GAV. They uniquely identify the resulting artifact of a project in a Maven repository (and should do so in the entire universe).
A minimal sample POM looks like:
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>com.sample</groupId>
<artifactId>sample-app</artifactId>
<version>0.0.1-SNAPSHOT</version>
</project>