The document discusses using Apache Ant to deploy Drupal 7 sites between development and production environments. It presents the problem of maintaining content, modules, and settings during deployment. The solution involves separating database tables into "settings" and "data", and using Ant scripts and a Drupal module called "synchro" to merge and sync settings, data, and variables between environments. Testing showed the Ant script could merge sites with up to 100,000 nodes within a few minutes.