After several years of running various CMS such as Typo3, Wordpress, custom systems and also Drupal, the online division of Greenpeace Germany decided to switch entirely to a single underlying system for all their online projects. Of all the discussed possibilities, Drupal stood out as the framework that appeared fitting best for the demands of Greenpeace.

In this case study, we will briefly describe the course of action for establishing a "Drupal only universe" at the German division of one of the world's most influential NGOs, which includes

- setting up an Aegir based server infrastructure for smooth project rollout and maintenance
- creating a Drupal based OpenID provider in order to allow SSO between the various Greenpeace websites
- building a powerful internal community plattform which allows German Greenpeace volunteers to share information
- giving local German Greenpace volunteers the possibility to introduce theirselves and bring up news and events by a Drupal based "Greenpeace Groups" distribution
which can deployed as often as needed while it's codebase is still managed and maintained centralized via Aegir
- making the final step in "Drupalizing Greenpeace Germany" by rebuilding the greenpeace.de website in Drupal 7 and saying goodbye to the old Typo plattform

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