Underworld's lightweight cloud for online classrooms.

One of the most popular cloud services for python / jupyter - based codes is binder (www.mybinder.org) which can transform an online repository into a running instance in the cloud with little effort on the part of the owner of that repository to set it up and no effort at all for the end user. Access to binder has transformed classes with computational content by allowing flexible delivery of content that does not have to depend on a standardized software stack that has been approved months in advance by a specialist IT group.

This is a companion discussion topic for the original entry at https://www.underworldcode.org/articles/underworld-low-fat-cloud/