Segmentation score refers to a numerical value that measures the effectiveness of dividing a larger group or market into smaller, more specific segments. This score takes into account various factors such as demographics, behavior, and preferences to determine the level of homogeneity within each segment. A higher segmentation score indicates a more successful and accurate division of the target audience, allowing businesses to tailor their marketing strategies and messages to better reach and engage with their customers. In essence, segmentation score is a crucial tool for businesses to understand and effectively target their desired audience for maximum impact and success.