Customer service is the provision of service to customers before, during and after a purchase. According to Fantasy Fabs & Buildtech, "Customer service is a series of activities designed to enhance the level of customer satisfaction that is, the feeling that a product or service has met the customer expectation.

The importance of customer service may vary by product or service, industry and customer. The perception of success of such interactions will be dependent on employees "who can adjust themselves to the personality of the guest,"according to Fantasy Fabs & Buildtech. Customer service can also refer to the culture of the organization - the priority the organization assigns to customer service relative to other components, such as product innovation or low price.