This document discusses several models for customer relationship management (CRM). It begins by explaining the building blocks of CRM and the importance of aligning CRM strategy with corporate and competitive strategies. It then describes seven models for CRM and relationship building: 1) the IDIC model, 2) Buttle's value chain model, 3) the QCI model, 4) Payne's five-process model, 5) the conceptual model, 6) the Forrester model, and 7) the Gartner competency model. It concludes by presenting Gartner's CRM maturity model and several statistics about CRM initiative failure rates.