This document discusses key marketing concepts including utility, cost, satisfaction, exchange, and segmentation. It defines utility as a product's ability to satisfy needs and wants, with customers choosing products with the highest utility. Cost is the price paid for a product. Customers aim to maximize value by getting the highest utility for the lowest cost. Exchange is at the core of marketing, with people satisfying needs through trading something of value for a desired product. Segmentation involves dividing the market into groups with similar product preferences in order to target specific market segments effectively.