SiriusDecisions unveiled an update to its proprietary Demand Waterfall, a model designed to unify sales and marketing teams and to establish closed-loop processes. The research firm shared the new model at the SiriusDecisions Summit, held last week in Scottsdale, Ariz. The new model focuses on managing leads sourced across a variety of channels, including sales, marketing and teleprospecting. Click here to learn more about the new Waterfall.