Marketing seeks to discover the needs and wants of prospective customers and satisfy them. Essential to this process is the idea of exchange. To marketing people exchange refers to the

the trade of things of value b/t buyer and seller so that each is better off after the trade.

Explanation:

Marketing experts regard exchange as a key concept and without it, no such activity as marketing could be possible. All sides must have something of interest to one another for a transaction to occur.

A marketing exchange is something that arises when two or maybe more individuals swap products or services at a certain given time. Every transaction is designed to create "usefulness" in marketing philosophy, which implies the worth of what we sell is much less than the worth on what we gain from the transaction. Obviously all actual-world trades are more complex.