Customer relationship management involves managing relationships with customers to promote customer loyalty and maximize profitability. It evolved from a transactional approach focused on individual sales to a relationship-based approach prioritizing long-term customer retention. CRM uses customer data and interactions to develop insights that support strategic marketing efforts like expanding customer base, reducing costs, and increasing profitable customers. It provides value to key stakeholders including customers through personalized service, employees through internal relationship management, and partners and suppliers through close collaboration.