Market segmentation involves dividing a heterogeneous market into homogeneous sub-units. It divides the overall market for a product into segments based on characteristics like geography, demographics, psychographics, and behavior. Effective segmentation allows companies to target specific groups, make marketing more efficient, and better meet customer needs. Some common bases for segmentation include geographic, demographic, cultural, behavioral, and psychographic factors. Market targeting then involves selecting which segments a business will focus its marketing efforts on. Common targeting strategies include single segment concentration, selective specialization, product specialization, and full market coverage.