The objective of the research is to know the importance of service marketing for companies with a good quality of customer service. It is essential to highlight that the marketing of services today oversees revealing the advantages that a company offers. Its most notable characteristic is that, unlike products, services are not directly perceived by the five senses of the body as real objects, but this does not mean that their different advantages are not taken advantage of. The goal of service marketing is to create experiences that keep customers coming back or saying good things about the brand. A good service can help you a lot since a satisfied customer will have the reason to buy again and therefore to recommend the services offered by the company to their friends. For this research, the bibliographical review will be used, which is obtained from printed and online resources, about service marketing and the quality of customer service to know its importance and strategies to achieve quality care. Applying service marketing together with the quality of customer service are crucial factors for the success of a company dedicated to the service area.