> For the complete documentation index, see [llms.txt](https://gchandra.gitbook.io/data-warehousing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gchandra.gitbook.io/data-warehousing/spark-databricks/medallion-architecture.md).

# 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).

<figure><img src="https://2629735788-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3G2NQEHaUSzehWzaKvXK%2Fuploads%2F4mFn8MO7pEFQu6HVfCDc%2Fimage.png?alt=media&amp;token=e93148b6-b8d9-4257-8192-682d42ae28ab" alt=""><figcaption></figcaption></figure>

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.