It builds servers. It deploys Django sites. It's amazing!
We built the Deployer to make spinning up small Django webapps trivial. By setting a few configuration variables it can take a bare Ubuntu instance (a la Rackspace Cloud, Slicehost, or Amazon EC2) and have a securely-configured, functional webserver running your app in a matter of minutes.
What Deployer is not: This isn't meant to be a one-size fits all solution. As we continue to develop it, one of the goals is to add more hooks to allow customization of the process for your preferred OS, webserver, directory structure, etc. For now, though, it's meant to take a very common deployment pattern and make it easy, repeatable, and secure.
Please take a look at the docs/ directory for full details.