The document discusses market segmentation and targeting. It defines market segmentation as dividing a market into groups based on characteristics like demographics, interests, location, etc. It then discusses the importance of segmentation for practices like variable pricing and customizing offers. It lists requirements for effective segmentation such as segments being measurable, accessible, substantial and differentiable. It defines market targeting as evaluating segments and selecting target markets. It outlines some common targeting strategies like focusing on a single segment or multiple segments.