This post will give us some common ground on which I can build my case for Drupal. To get started, we’ll need working definitions of success in business today, the nature of open source software, and a quick explanation of Drupal itself. In subsequent posts, we’ll explore specific concepts and examples of how Drupal enables success because it is open source software at scale – a powerful combination: the empowerment of freedom multiplied by an ecosystem of thousands of service providers, tens of thousands of developers, and millions of sites online.