Over a decade ago, Heroku co-founder Adam Wiggins published the Twelve-Factor App methodology as a way to codify the best practices for writing SaaS applications . In that time, cloud-native has become the default for all new applications, and technologies like Kubernetes are widespread. Best-practices for software have evolved, and we believe that Twelve-Factor also needs to evolve — this time with you, the community.

Originally, the Twelve-Factor manifesto focused on building deployable applications without thinking about deployment, and while its core concepts are still remarkably relevant , the examples are another story. Industry practices have evolved considerably and many of the examples reflect outdated practices.…