Brief walk through available infrastructure automation tools.
Links:
VirtualBox http://www.virtualbox.org/
Vagrant http://www.vagrantup.com/
Veewee http://github.com/jedi4ever/veewee
Bento http://github.com/opscode/bento
Chef http://www.opscode.com/chef/
Librarian-Chef http://github.com/applicationsonline/librarian-chef
Capistrano http://github.com/capistrano/capistrano