The document defines marketing as the business activities involved in the flow of goods and services from production to consumption. It involves coordinating the 4Ps of marketing: product, price, place, and promotion. Marketing serves the functions of exchange, physical supply, and facilitating exchange through activities like financing, risk-bearing, and providing market information. Modern marketing packages products and services with advertising, brands, prices, and distribution to drive sales promotion through advertising. Consumer behavior is influenced by both individual and environmental factors.