GigaOM had an interview with Microsoft's Chief Software Architect Ray Ozzie:
OM MALIK: You outlined Microsoft’s software-plus-services strategy, but what I want to know about is the changing role of the desktop in this service’s future.
RAY OZZIE: I think the real question is (that) if you were going to design an OS today, what would it look like? The OS that we’re using today is kind of in the model of a ’70s or ’80s vintage workstation. It was designed for a LAN, it’s got this great display, and a mouse, and all this stuff, but it’s not inherently designed for the Internet. The Internet is this resource in the back end that you can design things to take advantage of. You can use it to synchronize stuff, and communicate stuff amongst these devices at the edge.
A student today or a web startup, they don’t actually start at the desktop. They start at the web, they start building web solutions, and immediately deploy that to a browser. So from that perspective, what programming models can I give these folks that they can extend that functionality out to the edge? In the cases where they want mobility, where they want a rich dynamic experience as a piece of their solution, how can I make it incremental for them to extend those things, as opposed to learning the desktop world from scratch?