MEDALLION ARCHITECTURE

Building a scalable data platform with a huge amount of data is a real chaos. The efficiency of the data decreases and the process becomes increasingly complex. To solve this chaos Medallion Architecture offers a structured approach. It enhances data quality, query performance, and scalability across the pipeline by simplifying complexity.

Medallion Architecture organizes data into Bronze layer, Silver layer, and Gold layer, enabling clear data flow. It perfectly fits with Delta Lake and the data lakehouse concept

What is medallion architecture?

Medallion Architecture is a data design pattern used in modern data lakehouse environments like Delta Lake, Databricks, and Azure Synapse. to organize data processing. It is designed to bring structure, scalability, and reliability to big data platforms by organizing data into Bronze layer, Silver layer, and Gold layer. Each of these layers plays a specific role in transforming raw data into business-ready insights.

Bronze Layer:

The Bronze layer serves as the foundation. In this layer raw, unprocessed data is ingested from various sources such as logs, APIs, databases, or IoT streams. This data is usually messy, duplicated, and unvalidated. By preserving raw data in its original form, organizations ensure traceability and the ability to reprocess from scratch if needed.

Silver Layer:

Next is the Silver layer, where the real transformation begins. In this stage, data is cleaned, duplicates are removed, validated, and often joined with other relevant datasets. The Silver layer is all about refinement. It makes the data more structured, reliable, and suitable for analytical use. It acts as a bridge between raw ingestion and high-value business consumption.

Gold Layer:

Finally, the Gold layer holds curated, aggregated, and business-level data. This is the version of the data that is consumed by dashboards, reports, machine learning models, and other applications. It is optimized for performance and aligned with business logic, making it easy for decision-makers and analysts to derive insights quickly and reliably.

The biggest advantage of Medallion Architecture is its ability to simplify complexity. It’s a strategic approach breaking down the data pipeline into modular, clearly defined stages, makes it easier to manage data quality. It also aligns perfectly with Delta Lake’s features such as ACID transactions, schema enforcement, and time travel.

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