Cloud, nothing very new in that, clouds with pay as you go timesharing services attached were a common picture in slide shows as far back as the 1970s. However new technology makes it a whole lot easier and quicker to move from ideas on a slide to a powerful service reality. All very good but no service will manage itself, service management demands won't disappear and it is still necessary to deal with security, resilience and performance not to mention migration from one provider to another.