Career
Qumranet was sold to Red Hat in 2008 for United States$ 107 million. He previously founded the company behind the Xen software, XenSource, which was sold to Citrix for United States$ 500 million in 2007. Furthermore, he frequently acts as an angel investor in high-tech start-up companies such as Hyper9, Neebula, and Qlayer, which was sold to Sun Microsystems in January 2009.
The author of several books on Linux, file systems and open source development, he was also a senior editor at Byte Magazine for over eight years.
He also taught at Tel Aviv University. Before entering the high-tech business, he was a career officer in the Israel Defense Forces.