Content Managed Sites based in Drupal allow you to manage and update your own content directly, and can even allow visitors to your site to contribute content.
Having a Content Managed Site will let you bypass the hassle (and cost) of needing a developer update your website, making it easy to add news, events, photo galleries, podcasts and video. If you have ever used web-based email, you're 80% of the way to managing the content of your site.
We develop sites using the Drupal framework, an open-sourced platform that's been worked on by thousands of developers around the world for the past 8 years. Drupal provides a robust environment to implement just about anything that can be conceived.
With many CMS platforms you have to scale back your ambition to match the scope of the CMS. Drupal was built from the beginning on a modular system that allows additional functions and tools to be easily added to the site at a signifigantly lower cost then writing custom code from scratch.