Diana Waterman, a long-time Sage channel manager, has joined Avalara. Waterman was director of partner program for Sage Accountant Solutions from April 2013 through April 2015. In that role, she managed the educational program for Sage's accountant program and the Sage 50 reseller channel. Before to that, she was director of partner programs from October 2004 through May 2013 and was responsible for North American channel marketing.