The twelve-factor app is a development and deployment methodology for building apps with present-day concepts. Following it will ensure your app can be deployed easily and scaled effortlessly.
The website 12factor.net explains the concepts of the twelve-factor app. The lessons in this course each directly relate to one of the 12 factors and are presented in order. The first few go over revision control and managing the config and dependencies of your Node.js app, while the rest explain the devops of your app with Nginx & Docker, with concepts closely aligned to the 12-factor app.