Citrix Systems purchases Ardence in order to add real-time provisioning management to its operating system. The purchase is the latest in a string of acquisitions aimed at expanding Citrix's Dynamic Desktop Initiative. The Ardence technology allows computers to boot off the network and deliver an operating system to a bare metal machine in real time. The new technology makes up the third leg of Citrix's application delivery tool: virtualization for client/server applications, optimization for Web applications, and now streaming for the desktop. The Ardence product complements an effort already underway at Citrix to deliver application streaming using virtualization. The new product, called Tarpon, will be available in the first half of 2007.