The idea has since gained wide acceptance in the literature on total quality management and service marketing; and many organizations as of 2016 recognize the customer satisfaction of internal customers as a precursor to, and a prerequisite for, external customer satisfaction, with authors such.A customer purchases goods; a consumer uses them.

But actually, this definition describes better a classical internal process rather than a relationship between a customer and a supplier.Bank customer However, the average mortgage lasts approximately seven years, whereas a bank customer is usually there for life.English edit, etymology edit, from, middle English customere, custommere, from, old French coustumier, costumier (compare modern French coutumier from, medieval Latin custumarius (a toll-gatherer, tax-collector, noun from custumarius (pertaining to custom or customs, adj from custuma (custom, tax).

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