Companies segment the market to identify groups with different needs. Segmentation involves classifying customers based on attributes like demographics, lifestyle, and benefits sought. Targeting is selecting a specific segment to market to. Common targeting strategies include mass marketing to all, differentiated marketing tailored to segments, targeting different products to segments, or niche marketing focusing on one segment. 90t.i is a small company that uses concentrated marketing, developing specialized software just for its target segment of engineering companies.