A customer data platform (CDP) is a digital memory bank that collects and organizes data on customers' behavior, preferences, and interactions to create targeted marketing campaigns, optimize pricing strategies, and more. However, traditional CDPs have become silos of data, creating multiple data points that are disconnected and have limited activation capabilities. A composable CDP uses a data warehouse as its foundation, leveraging reverse ETL tools like Census to activate customer data, providing flexibility, control, and scalability. By building a composable CDP on top of a data warehouse, businesses can fulfill common use cases such as identity resolution, personalization, segmentation, omnichannel marketing, predictive modeling, and data governance without the need for expensive traditional CDP solutions. This approach provides fast access to customer data, reduces costs, and ensures data quality and governance.