Customer
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 exchange for money or some other valuable consideration.
Experience
Experience is the knowledge or mastery of an event or subject gained through involvement in or exposure to it. Terms in philosophy such as "empirical knowledge" or "a posteriori knowledge" are used to refer to knowledge based on experience. A person with considerable experience in a specific field can gain a reputation as an expert. The concept of experience generally refers to know-how or procedural knowledge, rather than propositional knowledge: on-the-job training rather than book-learning.
Management
Management (or managing) is the administration of an organization, whether it is a business, a not-for-profit organization, or government body. Management includes the activities of setting the strategy of an organization and coordinating the efforts of its employees (or of volunteers) to accomplish its objectives through the application of available resources, such as financial, natural, technological, and human resources. The term "management" may also refer to those people who manage an organization.
Management
Poorly managed corporations, disorganized businesses, and badly led service agencies experience crisis daily and most will eventually fail. In contrast, the danger is to well organized, smooth running institutions that may not recognize a building crisis. Too often, sound organizations rely on their normal modus operandi to pull them through a crisis. It might. But at what cost? And what if it does not pull them through?
Wheeler L. Baker, Crisis Management: A Model for Managers (1993), p. 6
Management
Management as an activity has always existed to make people’s desires through organized effort. Management facilitates the efforts of people in organized groups and arises when people seek to cooperate to achieve goals.
Daniel A. Wren and Arthur G. Bedeian. The evolution of management thought, 1972, p. 11-12
Experience
Experience is a mere whiff or rumble, produced by enormously complex and ill-deciphered causes of experience; and in the other direction, experience is a mere peephole through which glimpses come down to us of eternal things.
George Santayana, letter to the Marchesa Iris Origo (May 1933) The Letters of George Santayana, ed. Daniel Cory (1955).