There's updated information on the Drupal page in the form of the Drupal Extra describing how that page is built (it also described most of the site's structure). It's based on Drupal's taxonomy and view structure so that once an article is written, it automatically appears in the appropriate places -- as long as the proper taxonomy tags are selected.
From a friend at a company that has just converted a large website to Drupal. He says the old way was much easier: just send a request to IT. He adds that nevertheless, for quick edits and timely updates, Drupal is better.