Medallion Architecture Layers

Structure your data lakehouse into Bronze, Silver, and Gold tables to guarantee reliability.

Abstract Algorithms

Jul 2, 2026·1 min read·Intermediate

⚡

Quick Take

The Medallion Architecture describes a data design pattern that logically organizes data quality layers inside a lakehouse (like Delta Lake or Iceberg). 📊 Data Flow Layers Raw Sources ──► [ Bronze: R

The Medallion Architecture describes a data design pattern that logically organizes data quality layers inside a lakehouse (like Delta Lake or Iceberg).

📊 Data Flow Layers

Raw Sources ──► [ Bronze: Raw ] ──► [ Silver: Cleaned ] ──► [ Gold: Aggregated ]
                  │                   │                       │
                  ▼                   ▼                       ▼
            Immutable Logs     Filtered, Joined         Business-Ready
            Schema-on-read     Enriched Model           KPIs & Analytics

Bronze (Raw): Raw data ingested from sources (databases, APIs, webhooks) stored as-is without alterations.
Silver (Enriched): Cleaned, deduplicated, conformant, and parsed data. Relational joins are applied here.
Gold (Curated): Aggregated, business-level data optimized for analytics, dashboard reporting, and machine learning models.

AI-generated article quiz

Test your understanding

🧠

Ready to test what you just learned?

Generate four focused questions from this article. Answers include immediate explanations.

Reader feedback

Was this article useful?

Rate it if it helped, then continue with the next deep dive when you are ready.