Pantheon + Terminus + Drush + Backdrop CMS Development Workflow

Use case: Develop Backdrop sites and be able to continuously deploy patches, updates and features cleanly and easily on Pantheon. We, the Backdrop Community, hope to offer Backdrop local drush out of the box in the near future, but for now here are the steps to get you going on Pantheon, Terminus, Drush and Backdrop CMS right now!

Install Backdrop CMS with terminus: