With one-click, SimpleDeployr will launch an Amazon EC2 server, configure the server, checkout your code and add the server to a load balancer so you can get your app up and live to the world in only a few minutes. After the initial setup, it's only one more click to launch more servers, or deploy your latest code across all servers.
Learn more here: http://blog.appoxy.com/2010/01/blog-one-click-launch-deploy-and-scale.html