This document discusses key concepts in market segmentation, targeting, and positioning. It defines market segmentation as dividing a market into distinct groups with distinct needs, characteristics, or behaviors. Target marketing is selecting market segments to enter based on their attractiveness. Market positioning is arranging a product to occupy a clear place in consumers' minds relative to competitors. The document provides details on steps in segmentation and targeting, bases for segmenting markets, requirements for effective segmentation, and strategies for positioning and differentiating a product.