Anyone who works with SAAS products probably saw this coming:

Microsoft sees end of Windows era
Midori aims to uncouple its software from the hardware it runs on
Microsoft has kicked off a research project to create software that will take over when it retires Windows.

Called Midori, the cut-down operating system is radically different to Microsoft’s older programs.
It is centred on the internet and does away with the dependencies that tie Windows to a single PC.
It is seen as Microsoft’s answer to rivals’ use of “virtualisation” as a way to solve many of the problems of modern-day computing.
Read the story here: http://news.bbc.co.uk/2/hi/technology/7540282.stm