Backdrop CMS famously forked from Drupal after version 7, but there is still an ongoing, informal conversation between the projects, and many developers that use Backdrop also have projects that use Drupal. 

Recently that conversation has included Gin, the innovative and beautiful admin theme for modern Drupal, which has been ported and adapted for Backdrop CMS with the support of Sascha Eggenburger, the creator of Gin for Drupal. In this session we'll do a quick walkthrough of what the Gin theme and the corresponding Tonic module provide, any notable differences in end-user experience between the Drupal and Backdrop versions, and then a deeper dive into what it took to get a project built for modern Drupal to run on Backdrop. 

Project pages:

Site Building, UX / Design