This page covers information and resources that pertain to Drupal distributions.
A Drupal distribution is essentially a modification to Drupal core. Instead of installing a clean install of Drupal core (which only contains basic modules and functionality) for your website, you can install an adjusted profile which may contain other essential modules, themes, or custom programming.
Distributions (also referred to as installation profiles) are typically focused around a certain niche, topic, or industry need. For example, you can find Drupal distributions for publishers, social communities, internationalization, education, and enterprise level companies.
Most times, Drupal distributions are installed just like a regular version of Drupal.
Drupal distributions and installation profiles can be found on Drupal.org. You can also look at Drupal Distro Watch for another collection of distributions.
Further, feel free to browse the resources below for more information on Drupal distributions.