Wave’s delta-driven XML streams are directly descended from the Groove architecture, and Live Mesh can be seen as a similar reboot of its parent as part of Windows 7 and Live. In effect, Google and Microsoft are now at roughly the same place in integrating realtime into the respective architectures. I think we may have a race between the two vendors who really matter in core IT platform technology. The outcome to shape IT spending for years to come. The Manhattan Project by Steve Gillmor.