Deploy your Heroku app including nodejs buildpacks and environment variables with step-by-step explanation and code snippets. With so many deploying interfaces on the web like firebase, netlify, AWS….none have an effective way to deploy a node app server except Heroku.
https://dzone.com/articles/deploy-your-node-express-app-on-heroku-in-8-easy-s
https://dzone.com/articles/deploy-your-node-express-app-on-heroku-in-8-easy-s