This document provides an overview of key marketing concepts. It defines marketing as a social process involving the exchange of goods and services to satisfy needs and wants. The core concepts discussed include needs, wants and demand, products and services, customer value, exchange and relationships. It also distinguishes between selling and marketing, and describes the marketing concept orientation which focuses on customer needs rather than production. Key elements of the marketing environment, including internal factors like staff and resources, and micro factors like customers and suppliers, are also summarized.