The document discusses customer relationship management (CRM). It notes that traditional marketing approaches are no longer effective and companies are now focusing more on relationship marketing and customer retention. CRM can help companies retain customers, enable cross-selling opportunities, and introduce new products. There are three main types of CRM: operational, analytical, and collaborative. Operational CRM involves direct customer interactions while analytical CRM uses data to identify opportunities and optimize customer behavior. Implementing an effective CRM strategy provides many benefits but also poses some challenges for companies.