In the context of customer segmentation for a business (supermarket), and in order to gain a comprehensive understanding of its customers and their decision-making processes, we have undertaken the establishment of a data warehouse. This initiative aims to meticulously analyze which customer segment is most likely to purchase specific products. By implementing this data-driven approach, our goal is to facilitate the strategic design of effective communication strategies and precision-target the relevant customer categories. This project aligns with modern marketing and data science practices, enabling the organization to optimize its outreach efforts and enhance customer engagement through informed decision-making.