The premise of the episode is that Rails needs an “Active Deployment” gem built in to ease deployment of new apps to a variety of different services.
Our apps at work run an AWS EC2. To spin up a new one we currently need to create a new VM in AWS, somehow bootstrap the SSH certificates for ansible, run ansible to turn it into a Rails server and then run capistrano to deploy the application. It’s all documented in Confluence but I wouldn’t even know where to begin to try and create a similar set up for my own app(s).
The Heroku process was quite painless, their documentation is very thorough, but there were still a few sharp edges.
One thing that tripped me up for a while was getting Bundler versions in sync. I wrote up what I did on StackOverflow but I’ll cross post a lightly edited version on here for posterity.