Marketing involves developing, promoting, and distributing products to satisfy customer needs. It has 7 functions including selling, promotion, pricing, financing, distribution, marketing information management, and product/service management. Marketing provides economic benefits like bridging gaps between producers/sellers and customers, making products more useful, and increasing competition to lower prices. The marketing concept focuses on satisfying customer needs to earn profits. Marketing identifies customers who buy products and consumers who use products. The marketing mix includes the 4 P's of promotion, place, price, and product. There are two types of marketing: mass marketing for universal appeal products and market segmentation for customizing to specific groups.