DURHAM, N.C.--(BUSINESS WIRE)--Windsor Circle, with 70 employees and growing, is an industry leader in predictive, behavioral, and retention marketing automation for retailers, and a Showcase Company for the Marketing Software Sector and “Friend of Tech” sponsor at this year’s CED Tech Venture Conference in Raleigh on September 15-16. The premier southeast tech event will celebrate Raleigh’s booming entrepreneurial community as one of the nation’s rising technology hubs shaping the future of eC