---
title: "Jeffrey Palermo"
section: "entities"
type: "entity"
created: "2026-08-25"
updated: "2026-08-25"
tags: ["person", "educator"]
canonical: "https://pyweb.dev/wiki/jeffrey-palermo"
---
# Jeffrey Palermo

Software architect and creator of [onion architecture](/wiki/onion-architecture), a layered architectural pattern that influenced [clean architecture](/wiki/clean-architecture). His onion pattern emphasizes dependency inversion and separation of concerns through concentric layers.

## Key Contributions

### Onion Architecture
Developed the Onion Architecture pattern that organizes software into concentric layers with dependencies pointing inward toward the core domain. This pattern directly influenced [robert c martin](/wiki/robert-c-martin)'s [clean architecture](/wiki/clean-architecture) synthesis and its emphasis on the [dependency rule](/wiki/dependency-rule).

## Related Concepts
- [onion architecture](/wiki/onion-architecture) — his core architectural contribution  
- [clean architecture](/wiki/clean-architecture) — incorporates his onion layering approach

 [[source: uncle-bob-clean-architecture-2012]](/wiki/raw/articles/uncle-bob-clean-architecture-2012)

---

## Agent Navigation

cluster: person (170 pages) | betweenness: 0

### References (outbound)
- [Onion Architecture](https://pyweb.dev/wiki/onion-architecture.md)
- [Robert C. Martin (Uncle Bob)](https://pyweb.dev/wiki/robert-c-martin.md)
- [Clean Architecture](https://pyweb.dev/wiki/clean-architecture.md)

### Referenced by (inbound)
- [Onion Architecture](https://pyweb.dev/wiki/onion-architecture.md)

### Evidence (verified primary sources)
- [uncle-bob-clean-architecture-2012](https://pyweb.dev/wiki/raw/articles/uncle-bob-clean-architecture-2012.md) | origin: https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html | ingested: 2026-08-25 | sha256: b99ae450b5981dbee264aec42701b920ce96ccedea01d03243ea48c414442379

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- Knowledge graph: https://pyweb.dev/api/graph.json
- Graph analysis: https://pyweb.dev/api/graph-analysis.json
- Context index: https://pyweb.dev/llms.txt