Customer relationship management (CRM) consists of the processes a company uses to track and organize its contacts with its current and prospective customers. CRM software is used to support these processes; information about customers and customer interactions can be entered, stored and accessed by employees in different company departments. Typical CRM goals are to improve services provided to customers, and to use customer contact information for targeted marketing.

A customer, also client, buyer or purchaser is usually used to refer to a current or potential buyer or user of the products of an individual or organization, mostly called the supplier or seller. This is typically through purchasing or renting goods or services. However in certain contexts the term customer also includes by extension anyone who uses or experiences the services of another. A customer may also be a viewer of the product or goods in which are being sold.