Aegir
Aegir is a distribution that automates many of the common tasks related to deploying, maintaining, or backing up your Drupal sites. It is a "super distribution" in the sense that it allows to administer all the distributions installed on your server. Do you want to deploy a DrupalCommerce, OpenAtrium, OpenEntreprise, Drupal7, Drupal8 site? Your deployment takes less than 5 minutes if you master your domains :) Moreover, the distribution allows you to manage more efficiently your multi-site architectures, or the administration of a site with heavy traffic in the case of a multi-server hosting.