This is a video of a breakout session from BriForum Europe 2007, presented by Ron Oglesby.
Session Description: VMware has been the hardware virtualization leader for some time. But now that Citrix bought XenSource, and now that Microsoft is releasing Viridian, is this still true? How are these products similar, and how are they different? What does the whole "kernel virtualization" versus "para-virtualization" thing mean, and does it even matter?