About 80 percent of businesses have virtualised some level of their data centres, and Avaya officials – pointing to research by Nemertes Research – said 70 percent are planning to virtualise their UC applications. Partnering with VMware made sense, given the virtualisation vendor's broad reach in the industry; about 94 percent of Fortune 100 businesses are VMware customers, Berry said. About 85 percent of Fortune 100 companies also are Avaya customers.