Microsoft thinks it can create an operating system for cloud computing:

‘Windows Cloud’ to descend this month, says Ballmer

From the article:

“We need a new operating system designed for the cloud and we will introduce one in about four weeks, we’ll even have a name to give you by then. But let’s just call it for the purposes of today ‘Windows Cloud’,” said Ballmer.

Also:

But many people aren’t sold on the idea, as you can see in these two articles:

1) Slavish reporters join Microsoft in cloud cuckoo land

2) Microsoft’s Windows Cloud Smells Funny