This document provides an overview of marketing concepts. It defines marketing as delivering customer satisfaction at a profit. The goal of marketing is to attract new customers by promising superior value and keeping current customers satisfied. Marketing deals with customers and creating value and satisfaction. Market segmentation involves dividing the market into groups that may require different products or marketing approaches. The benefits of segmentation include focusing on opportunities, reducing costs, and achieving competitive advantage. Key steps in segmentation include identifying variables, developing profiles, evaluating attractiveness, and selecting target segments. Potential variables for segmenting consumers or businesses are also outlined.