This document discusses true closed loop marketing, which integrates marketing and sales functions to allow continuous data flow between the two. It begins by explaining how traditionally businesses focused on sales, but now customers are the core. Closed loop marketing recognizes that data from CRM, marketing, and sales interactions must be integrated for businesses to satisfy customer needs. It then defines closed loop marketing as a two-way communication that builds real customer relationships rather than just making sales. The document ends by outlining benefits of true closed loop marketing like better lead management, personalization, a 360-degree customer data view, and improved customer analytics.