Do you know about the Medallion Architecture?

The Medallion Architecture is a data lake design pattern that structures data into three layers: Bronze, Silver, and Gold. The Bronze layer stores raw, ingested data with minimal transformation, preserving source fidelity. The Silver layer cleanses, enriches, and normalizes data, making it ready for analysis; it often includes deduplication, type casting, and schema enforcement. The Gold layer contains business‑ready, aggregated datasets tailored for specific analytics or reporting needs. This tiered approach enables incremental processing, reduces data duplication, and provides clear lineage. It also supports governance by allowing data quality checks at each stage. Many modern lakehouse frameworks, such as Databricks Delta Lake or Snowflake, implement Medallion principles to balance flexibility and performance. By separating concerns, teams can iterate quickly on raw data while delivering stable, high‑quality datasets to downstream consumers.