Medallion Architecture

Data Lake + Data Warehouse = Lakehouse

A medallion architecture is a data design pattern used to logically organize data in a lakehouse, aiming to incrementally and progressively improve the structure and quality of data as it flows through each layer of the architecture (from Bronze ⇒ Silver ⇒ Gold layer tables).

Bronze Layer = Raw Data.

Silver Layer = Cleansed and conformed data. Data that comply with the rules of the business.

Gold Layer = Curted business-level tables.