Use env Files TODO write up more notes The 12factor App manifesto, mentions config as one of the factors. Resources and References Blog post by Ruben Colon: "Getting Started with .env Files in JavaScript" Blog post by Phil Nash: "Node.js includes built-in support for .env files" Blog post by Parthibakumar Murugesan: "What is .env ? How to Set up and run a .env file in Node?" "The Twelve-factor App"