medallion-architecture

Medallion architecture is a Bronze, Silver, and Gold data lakehouse pattern that adds structure, governance, and quality across ingestion-to-analytics. It orchestrates layered data pipelines using Delta Lake or Iceberg backends to move raw data to business-ready insights.

Build ETL pipelines by ingesting raw data with audit columns in the Bronze layer, validating types and deduplicating in the Silver layer, and building a star schema with facts and dimensions in the Gold layer for business-ready analytics.

Yes, the medallion architecture supports both Delta Lake and Iceberg backends. It leverages their ACID transactions, time travel, and schema evolution features to ensure governed, auditable pipelines across all medallion stages.

Enforce data quality checks by validating types, deduplicating, and enriching data within the Silver layer. The architecture applies schema evolution, audit columns, and lifecycle governance across all stages to maintain pipeline integrity.

You need schema evolution and audit columns when building scalable, governed data pipelines that require immutable lineage in the Bronze layer and structured transformations across evolving data sources in the Silver and Gold layers.

The best way is to use the Gold layer in a medallion architecture to build a star schema with facts and dimensions. This follows validating and enriching data in the Silver layer, ensuring business-ready analytics with governed lineage.