Market segmentation is a foundational practice in consumer intelligence that organizes a target population into meaningful clusters, each defined by common traits such as demographics, psychographics, purchase behavior, or unmet needs. Effective segmentation moves beyond surface-level groupings to capture the motivations and decision drivers that actually differentiate one consumer group from another. In qualitative research, segmentation work often involves in-depth interviews and thematic analysis to give each segment a human voice, not just a statistical profile. When segmentation is grounded in real consumer conversations, insights teams can build strategies that reflect how people actually think and behave, rather than how data models assume they do.