This document provides an overview of customer relationship management (CRM). It defines CRM as an integrated approach to identifying, acquiring, and maintaining customers. The document outlines the history and evolution of CRM from database marketing in the 1980s to more advanced internet-based systems today. It also discusses the benefits of CRM for companies, including increased customer loyalty, repeat business, and financial performance. Finally, the document reviews some of the major CRM software providers and their offerings.