This document discusses market segmentation and target marketing. It begins by defining market segmentation as dividing a large market into smaller groups with common characteristics. There are various bases for segmentation including geographic, demographic, psychographic, and behavioral factors. The document then discusses different levels of segmentation from broad segments to niche and individual marketing. It provides examples of companies targeting segments. Finally, it covers strategies for selecting target markets such as focusing on one segment, several segments, one product across segments, or aiming for total market coverage.