XenSource Names Frank Artale as Vice President of Business Development and John Bara as Vice President of Marketing; Veteran Enterprise Software Team Now In-Place to Substantially Grow Business

Business Wire, March 8, 2006

PALO ALTO, Calif. -- XenSource, Inc., the leader in infrastructure virtualization solutions based on the open source Xen hypervisor, today announced that Frank Artale and John Bara have joined the company as vice president business development and vice president of marketing, respectively. With proven experience helping to grow emerging software companies, Artale joins the company with more than twenty years experience in engineering and executive management and will be responsible for OEM and business partnerships, as well as product management. A veteran marketing executive, Bara will be responsible for all aspects of marketing at XenSource and brings extensive experience in the development and execution of programs for worldwide field, customer and partner marketing.

"Both Frank and John bring the exceptional leadership and management experience required to help XenSource become a leader in the fast-emerging virtualization marketplace," said Peter Levine, president and CEO of XenSource, Inc. "With the senior management team now in place, we will be able to focus our efforts on building great relationships with our partners and OEMs and delivering world-class products to our customers."

Artale was most recently a member of the venture development team at Accel Partners where he worked as an advisor to such companies as Mendocino Software and Centrify Software. In this role, he had also been working with XenSource on overall business strategy for the past several months. Prior to Accel, Artale was a founder and CEO of Consera Software, a management software company, which was acquired by HP in 2004. Before founding Consera, Artale was vice president of the Windows Solutions Group for VERITAS Software, where he oversaw overall product strategy of the Windows targeted solutions. Prior to this position, he was the general manager in the Windows 2000 group at Microsoft Corporation, one of the many and varied product management and sales positions he held during his nine-year career with the company.

Prior to joining XenSource, Bara served as senior vice president of marketing at Interwoven where he was responsible for creating and overseeing all marketing programs. Before joining Interwoven in 2001, he was vice president of marketing at Genesys Telecommunications Labs, Inc. Previous to this position, Bara spent five years at Intel, where he was a management team member for the Pentium group, financial controller for the microprocessor group, and also was responsible for large OEM customers. Bara began his career in financial services serving as an executive with the Bank of Boston and Citibank Tokyo and received an MBA degree from Harvard Business School and a BA from Oberlin College.

"The opportunities for XenSource in the US and internationally are exceptional and seemingly endless," said Artale. "The awareness and understanding of the need for virtualization is increasing rapidly, and being a part of a company with this potential for growth and partnerships is extremely exciting."

"XenSource has the ability to unlock the power of the open source Xen hypervisor," said Bara. "Our products and services will combine the best of open source with added-value solutions to meet the business needs of our customers. I look forward to helping accelerate the growth of the business."

About XenSource, Inc.

XenSource, Inc. develops software virtualization solutions based on the industry's highest performance virtualization technology, the open source Xen hypervisor. Founded and run by the original Xen development team, XenSource products allow enterprises to realize the benefits that result from server consolidation, increased utilization, and reduced complexity in the datacenter. For more information, visit www.xensource.com.