The Twelve-Factor App

Edition

The English pages of 12factor.net, whose footer reads “Written by Adam Wiggins • Last updated 2017”, rendered from content/en of github.com/heroku/12factor (commit 1385d2c): the home page (Introduction, Background, Who should read this document? and the heading The Twelve Factors), then the twelve factor pages in order. The list of the twelve factors on the home page repeats the titles and summaries that head the factor pages, so they are set once, as the headings of the factors. Links are set as plain text. The four diagrams of the pages (public/images of the repository) are redrawn as vector graphics with their labels; their alternative texts, which the pages do not display, are left out. The MIT notice of the repository is printed at the end of the text.

Rights

Copyright (c) 2012 Adam Wiggins Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSE file of https://github.com/heroku/12factor, the repository that 12factor.net links as its source code, whose Readme says “Released under the MIT License”; the copyright notice and the permission notice are printed at the end of the text of the poster. The same text and diagrams are also published under CC BY 4.0 in the main branch of https://github.com/twelve-factor/twelve-factor, the open-source successor announced on 12factor.net. The four diagrams are codebase-deploys.png, attached-resources.png, release.png and process-types.png in https://github.com/heroku/12factor/tree/main/public/images, under the same MIT license (and the same CC BY 4.0 in the successor): the poster redraws them.