This document discusses market segmentation and positioning. It defines market segmentation as dividing a market into distinct groups based on needs, characteristics, or behavior. Companies segment markets to target customer groups they can serve most effectively. The document outlines different levels of segmentation from mass marketing to niche marketing. It also discusses variables used to segment consumer and business markets, as well as international markets. Effective segmentation requires segments that are measurable, accessible, substantial, differentiable, and actionable. Market positioning involves defining a product's place in customers' minds relative to competitors. Companies identify competitive advantages and determine an overall value proposition for positioning.