aegir project

One of the most common questions that I get asked is why we are developing Aegir on Drupal 5. People who have been involved with the project for a while already know the answer, but I thought I'd post this executive summary.

Due to it's design, the Aegir system is fully capable of installing and managing Drupal 5, Drupal 6 and Drupal 7 sites, including managing upgrades of sites between all those versions. Only the front end (namely the hosting module, hostmaster install profile and now, the eldir theme) is Drupal 5 based.