"Just as we have an operating system for the PC, for the phone, and for the server, we need a new operating system that runs in the Internet,".... "Windows Cloud will be a place where you can run arbitrary applications up in the Internet that runs .NET." ..... "a shift in Microsoft's overall developer tools, means putting .Net in the browser, which we've done with our Silverlight technology," Ballmer said.... "PC applications have better user interface, and you can integrate them more. Browser applications run on non-Windows machines, and they're easier to manage. We need to bring the benefits of both of those things together on Windows, and through our Silverlight technology permit the targeting of other systems."