Cameron Sturdevant lists 9 points to keep in mind when comparing virtual desktop hypervisors.
I start by identifying what will be required of the desktops, what sort of hardware (client and server) will be required to support the requirements, and then I dive into the murky, swirling world of licensing:
1. License costs
In addition to the “three C’s” one of the most important testing criteria is licensing costs. None of the competing vendors make it easy to do an apples-to-apples comparison, so you’ll need to do some noodling to get a price per-desktop, per-year figure. It makes a difference how many years you include in your calculations. I suggest looking at a minimum of three and a maximum of five years, depending on your current physical desktop or laptop formula. Speaking of physical systems, you should factor in the costs of the user devices on which the remote virtual desktops will be hosted.