Heroku is a Platform as a Service (PaaS), where you can deploy and manage your Ruby on Rails applications. It is one of the easiest platforms to deploy to; allowing you to focus on the development side of things instead of worrying about managing an infrastructure.

Continuing on from the previous episode, we look at creating a Docker Swarm cluster and using Traefik to load balance and route requests to various applications. Using this and CloudFlare proxies, we're able to create and deploy hobby applications in minutes.

Continuing from the previous episode, we look at speeding up the build times with a remote builder, continued warning about accessories, implementing background jobs, setting up the infrastructure for background workers and diving more into the MRSK commands.