"The cloud" isn't some nebulous thing existing just beyond your computer's consciousness. As Microsoft showed us, it's stacks of hard drives packed into shipping containers, parked in secret data centers all around the world. Physically real, but still beautiful.
Microsoft's cloud capability isn't just interesting because Ballmer told us it was. It's the only serious hardware company that also has a serious cloud capability. (Google can't touch Microsoft's hardware, and Apple can't touch either in online services.)