Relationship marketing is a form of marketing that emphasizes customer retention and satisfaction over sales transactions. It recognizes the long-term value of customer relationships by using communication beyond just advertising to build more collaborative relationships. As technology has advanced, relationship marketing has evolved, using tools to gain insights beyond basic customer data to better manage customer relationships. Many types of companies can benefit from relationship marketing, including small businesses that rely on regular customers, large companies that invest heavily in relationship marketing campaigns, and industry leaders that must keep existing customers to maintain their position.