Today, we are excited to announce Twelve-Factor is now an open source project. This is a special moment in the journey of Twelve-Factor over the years. Published over a decade ago by Heroku co-founder Adam Wiggins to codify the best practices for writing SaaS apps , the ideas espoused on the Twelve-Factor App website inspired many generations of software engineers and the principles we take for granted in modern application development. Open sourcing the 12-Factor App is an important milestone to take the industry forward and codify best practices for the future. As the modern app architecture reflected in the 12-Factors became mainstream, new technologies and ideas emerged, and we needed to bring more voices and experiences to the discussion. Vish Abrams Chief Architect, Heroku by Salesforce What is a 12-Factor app? A 12-Factor App is an application designed in accordance with the 12-Factor App principles, which aim to maximize portability, scalability, and reliability in the cloud.…