What Is a Drupal "Platform" on Aegir?

“If you use the excellent Aegir program to manage multiple Drupal web sites, you’ll hear a lot about “platforms”. What are these mysterious platforms? And why should you bother about them? Here’s why: if you understand how to use Drupal platforms, you can upgrade your Drupal sites again and again with a minimum of work.” – Read the full article written by Bill Powell »