The Maven Site Plugin is used to generate a site for the project. The generated site also includes the project's reports that were configured in the POM.
The Site Plugin is used to generate a site for the project. The generated site also includes the project's reports that were configured in the POM.
Please check the official usage page for a first look at this plugin.
If you are using the old plugin version 2, check the official migration guide on the version 3 usage.