Excerpt from book:

Define marketing and identify the requirements for marketing to occur.

Marketing is an organizational function and a set of processes for creating, communicating, and delivering value to customers and for managing customer relationships in ways that benefit the organization and its stakeholders. This definition relates to two primary goals of marketing: (a) assessing the needs of consumers and (b) satisfying them. For marketing to occur, it is necessary to have (a) two or more parties with unmet needs, (b)a desire and ability to satisfy them, (c) communication between the parties, and (d) something to exchange.