Exchange, transactions, and relationships
Marketing occurs while people decide to satisfy wants and needs through exchange. Exchange is the act of getting a desired object from somebody by offering something in return. While exchange is a core concept of marketing, a transaction (a trade of values among two parties) is marketing's unit of measurement. Mostly involve money, a response, and action.
Marketing consists of actions which taken to build and maintain wanted exchange relationships along target audiences including, service, product, idea, or other object.