Market segmentation involves dividing a market into subgroups of consumers with similar needs, characteristics, or behaviors. It includes segmenting by geography, demographics, psychographics, and behaviors. Some key types of segmentation are geographic, which divides based on location; demographic, which divides based on attributes like age, income, gender; psychographic, which divides based on attitudes and lifestyles; and behavioral, which divides based on purchasing behaviors and decision making processes. Once segmented, companies can target specific groups and position their products to appeal most to the desired segments.