In a move that tells something about Apple Inc.’s new business strategy, the company seems to have decided to allow the users to run its operating system in virtual machines. This move involves also a change in Apple Inc.’s end-user licensing agreement (EULA) for the Mac OS X Server 10.5 Leopard. Practically, the change has been first noticed by a system engineer from the University of Wisconsin-Madison, who has seen that Apple Inc. now allows the Mac OS X Server to run in a virtual machine as long as each virtual machine is stocked with a different license and as well the physical system in made also by Apple Inc. However, Apple Inc.’s client version of the operating system is still bared from being virtualized.

"You may also install and use other copies of Mac OS X Server Software on the same Apple-labeled computer, provided that you acquire an individual and valid license from Apple for each of these other copies of Mac OS X Server Software.” – Apple Inc.’s new EULA says, adding also that "You agree not to install, use or run the Apple Software on any non-Apple-labeled computer, or to enable others to do so." These rules are joined, however, by another announcement coming from Apple, which informs the would-be buyers that the Mac OS X installation DVD that is included along with each new MacBook laptop is “designed for use on this computer only”. Although this move could mean an anti-piracy tool, it could be in fact somehow related to the company’s future plans related to virtualization.

Ben Rudolph, Parallels Inc.’s director of communications, has said that "This is the first time they've changed their EULA to allow virtualization.”

"We've known for a long time that it was technically feasible to implement OS X in a VM." – Ben Rudolph has also said.