Banyan VINES was a network operating system developed by Banyan Systems for computers running AT&T's UNIX System V. VINES is an acronym for Virtual Integrated Network Service. Like Novell NetWare, VINES's network services were based on the archetypical Xerox XNS stack. James Allchin, who later worked as Group Vice President for Platforms at Microsoft until his retirement on January 30, 2007, was the chief architect of Banyan VINES.