---
session_id: "1373480"
title: "Brownfield Factories"
phase: live
last_checked: 2026-11-12T18:52:58-08:00
render: 20261113-025258-ddff00
---

# Links: Brownfield Factories

## Speaker

**Justin McCarthy**, Founder and CEO, Diffusion

- X: [@BuiltByJustin](https://x.com/BuiltByJustin)
- GitHub: [jmccarthy](https://github.com/jmccarthy)

## Company

**[Diffusion](https://www.diffusion.io/)**: "We build software factories with
teams like yours." (from the site)

## Resources

- **Companion** · [Brownfield rewrite resources](https://diffusion.io/brownfield)
  (Diffusion). The page behind the talk's closing QR code, "for your agents":
  replay and comparison testing, generated inputs, testing the tests,
  specification and proof, simulated users, migration and cutover, and a Cedar
  case study.
- **Blog** · [Software Factories And The Agentic Moment](https://factory.strongdm.ai/)
  (StrongDM, 2026-02-06, Justin McCarthy). The StrongDM software factory the
  talk starts from.
- **Video** · [Nov 12 Mainstage livestream, from about 6:34:10](https://www.youtube.com/watch?v=y9JtCCZP2MQ&t=23650s)
  (full-day Mainstage livestream, not a per-talk video; the offset is approximate).

## Gaps

- LinkedIn (from the roster) answered 999 with no page title; not published.
- The companion page does not name him; it links his X account.
- The demand factory and brand envelope have no write-up found.
- No per-talk recording or slides yet. The dossier rechecks every 6 hours until
  72 hours after the event, then daily.