Architectural DebateThere is a classic debate that data architects often have among themselves: how to fit a traditional data warehouse on a data lake or enterprise data platform. This article walks through the architecture evolution and describes three architecture patterns that I have implemented across enterprises to help you decide where a data warehouse fits in a modern data platform.The data warehouse acted as a single source of truth that finance, retail, and operations teams could trust for day-to-day reporting. Appliance warehouses like Teradata, Netezza, and SybaseIQ dominated enterprise data for decades, and SQL was the universal language that held it all together.