EC2 is the only provider where you can make API calls to launch 50 servers, have them all booted in a few minutes, then shut them down an hour later GoGrid (ht

EC2 is the only provider where you can make API calls to launch 50 servers, have them all booted in a few minutes, then shut them down an hour later GoGrid (http://www.gogrid.com http://www.gogrid.com) also has this ability (they also have cloud-based F5 load balancing and mountable block-level storage). They have datacenters on the West and East coasts, and you can pick one when starting an instance.