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.
Back in Episode #106, we configured and deployed to a very simple AWS Beanstalk environment. However, in this episode, we take things a bit further and explore security groups, an existing database and redis service. Also, there are a few changes that we have to do in order to get Rails 6 working within Beanstalk.