Twelve Factor App

The Twelve-Factor App is a methodology for building software-as-a-service applications that are portable, deployable on modern cloud platforms, and scalable without significant architectural changes. Originally published in 2011 by Adam Wiggins (Heroku), the methodology was open-sourced in November 2024 and is now actively maintained at github.com/heroku/12factor with community-driven updates for Kubernetes, containers, and GitOps workflows.

SOURCE: https://12factor.net/blog/open-source-announcement (accessed 2026-02-26)

The Twelve Factors