One of the most useful features of Drupal 8 is the migration framework in core, and there are already plenty of plugins to work with different sources that are available in contributed modules. 

When writing your own code, it must always be debugged. As migrations can only be started with Drush, the debugging can be a bit challenging. And it gets even more interesting when you develop your website in a Vagrant box. 

In this tutorial, we will go through setting up xDebug and PhpStorm to debug your migrations.