Сатушы мен сатып алушы қарым-қатынасы және клиент ұғымы

Recipient of a good, service, product, or idea from a vender or seller

In sales, commerce, and economics, a customer (sometimes known as a client, buyer, or purchaser) is the recipient of a good, service, product, or an idea, obtained from a seller, vendor, or supplier via a financial transaction or an exchange for money or some other valuable consideration.

Early societies relied on a gift economy based on favours. Later, as commerce developed, less permanent human relations were formed, depending more on transitory needs rather than enduring social desires. Customers are generally said to be the purchasers of goods and services, while clients are those who receive personalized advice and solutions. Although such distinctions have no contemporary semantic weight, agencies such as law firms, film studios, and health care providers tend to prefer client, while grocery stores, banks, and restaurants tend to prefer customer instead.

The term client is derived from Latin clients or care meaning "to incline" or "to bend", and is related to the emotive idea of closure. It is widely believed that people only change their habits when motivated by greed and fear. Winning a client is therefore a singular event, which is why professional specialists who deal with particular problems tend to attract long term clients rather than regular customers.

A client paying for construction work is often referred to as an "employer".

Leading authors in management and marketing, like Peter Drucker, Philip Kotler, W. Edwards Deming, etc., have not used the term "internal customer" in their works. They consider the "customer" as a very specific role in society which represents a crucial part in the relationship between the demand and the supply. Some of the most important characteristics of any customer are that: any customer is never in a subordination line with any supplier; any customer has equal positions with the supplier within negotiations, and any customer can accept or reject any offer for a service or a product. Peter Drucker wrote, "They are all people who can say no, people who have the choice to accept or reject what you offer." In opposition to the stated customer's characteristics, relationships between colleagues in a company are always based on subordination – direct or indirect. Company employees are obliged to follow the processes of their companies. Company employees do not have the authority to choose a unit/colleague to fulfill any task. Company employees are obliged to use an existing unit/colleague by using the company's structure and approved processes, therefore these internal relationships are not considered as an option. Many authors in ITIL and Six Sigma methodologies define "internal customer" as an internal part of a company that uses the output of another part of a company as its input. But actually, this definition describes better a classical internal process rather than a relationship between a customer and a supplier. Peter Drucker considers that there are no customers inside organizations. He wrote "Inside an organization, there are only cost centers. The only profit center is a customer whose check has not bounced." In addition, William Deming advises managers, in his 9th point, to "Break down barriers between departments. They must work as a team", which means that there have to be teamwork in a company rather than a supplier/customer relationship. One more argument, even the ITIL methodology admits that "the term 'colleague' may be more accurate in describing how two internal groups are related to one another. ".