One of the most exciting features of Platform.sh is it’s ability to use Drush makefiles to rapidly prototype sites. By default, new projects can start with a makefile that will automatically add Commerce Kickstart or vanilla Drupal. Then, using the makefile, you can add new modules, themes, and libraries, by simply adding a few lines to the makefile and commiting. When you push the changes to your platform, the entire site will be rebuilt. Plus, whenever you’re in “makefile mode” any extra files that are in the root of the respository get pushed into sites/all/default. So if you have any custom modules, you can just stick them in modules/ and they’ll end up in sites/all/default/modules. This can make your code bases not only small, but far more manageable. You can convert a site that isn’t a makefile into a makefile. And in this post, that’s exactly what we’re going to do.