Harapin’s [VMware exec] not just thinking servers though. He’s thinking the end of all “large commercial operating systems.” Instead, we’ll use special-purpose computers that are customized to run a particular application or set of applications. “They essentially package that up as an appliance, a running server or a running application, and they send it to you.”
Basis of this applications is gnu/linux. The whole article can be read on blogs.computerworld.com.