Tags
AI, Analytics, Artificial Intelligence, cloud, data mesh, Data Warehouse, data-lakehouse, llm, medallion-architecture, technology
Martyn Rhisiart Jones
Segovia 20th December 2025

The Data Warehouse Is Dead. Long Live the Data Warehouse.
In 1992, Bill Inmon coined the term “data warehouse” and laid out four sacred rules: subject-oriented, integrated, non-volatile, time-variant. It was a blueprint for a fortress of truth, expensive, on-premises, batch-processed, and utterly indispensable. Fast-forward three decades. The fortress has been replaced by something that resembles a hyperscale cloud platform. This platform can run your AI models and your CEO’s dashboard simultaneously. Welcome to data warehousing in 2025.
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