First look at the upcoming Apple Silicon processor and what it will be like for us Ruby Developers. Honestly, I wish that it was a better experience. However, with macOS Big Sur being beta and the DTK not being the final consumer hardware, there's still hope yet.
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.