This document discusses market segmentation and targeting strategies. It defines market segmentation as dividing a market into subgroups with similar needs or characteristics. Effective segmentation criteria include segments being measurable, substantial, accessible, actionable, responsive, and stable. Segmentation allows companies to better understand customers, develop tailored marketing mixes, and target niche markets. Common bases for segmentation include demographics, geography, behaviors, and psychographics. The document also outlines differentiated, undifferentiated, and concentrated targeting strategies.