How to move your Backdrop site to Pantheon
When moving from traditional web hosting to managed platform-specific hosting providers like Pantheon, there are often a few tricks you'll need to work around. In this post I'll be documenting the steps necessary to move an existing website onto Pantheon.
Step 1: Create a new website on Pantheon
As someone who manages dozens of websites, I love Pantheon's upstreams. Whenever there is a security update for Drupal core or for Backdrop core, the provided one-click core update saves me a lot of time. Whenever I start a new Pantheon project or moving an existing site onto Pantheon, I want to start from an upstream.
I'll start by creating my site from Backdrop's Pantheon upstream.
I also like to run the installer to get a working Backdrop site (you'll see why later). I will replace various parts in the steps that follow.