GoKawiilHeroku engineers document the Twelve-Factor App methodology for SaaS development
A group of contributors, drawing on their experience building and scaling apps on the Heroku platform, published a methodology called the Twelve-Factor App. It outlines a set of practices for building software-as-a-service applications that can use any programming language or backing services like databases and queues, aiming to reduce software erosion and ease collaboration among developers.