New submitter cloudozer writes "Virtual servers in the future may stop using OSes entirely. As recently demonstrated OS-less platforms may change our understanding of how long does it take to bring a server up. A demo server gets created, booted up, configured, runs an application and shuts down in under 1 second. Radically lower startup latency means that the computing infrastructure may be woven strictly on demand, during the processing window allotted for a given request. Currently cloud providers round an instance uptime to the full hour when calculating charges. They might need to switch to per-second billing if OS-less instances get traction. The demo uses a new Erlang runtime system capable of running directly on Xen hypervisor."