# From Raw to Trusted: Bronze, Silver, and Gold

> Getting data into a warehouse does not make it trusted. This sketch follows raw landed data through cleaning and standardization, then into business-ready datasets.

June 2026 | Warehouse

Tags: Bronze Silver Gold, Lakehouse, Data Modeling

Canonical page: https://datasketch.caesarmar.io/sketches/bronze-silver-gold/

![Data Sketch Episode 4: From Raw to Trusted with Bronze, Silver, and Gold layers](https://datasketch.caesarmar.io/images/data-sketch/data-sketch-episode-04.jpg)

## Reading the sketch

### Bronze: raw landed data

The bronze layer receives data from source systems with minimal transformation.

### Silver: cleaned and standardized data

The silver layer cleans, standardizes, and deduplicates the landed data.

### Gold: business-ready trusted data

The gold layer turns prepared data into datasets for business use.

## Takeaway

Each layer has a distinct job: land the source data, improve its quality, then shape it for business use.

## Sources

- [Original LinkedIn post](https://www.linkedin.com/posts/caesarmario_dataengineering-dataarchitecture-datawarehouse-activity-7477530103883673600-Ur5L)
- [Mario Caesar](https://caesarmar.io/index.md)