Disclaimer: I am one of the founders of DataCabinet.
We built an online service on top of Jupyter which takes away the effort of handling JupyterHub. It would be great if we could hear some feedback in the context of this conversation. We feel that DataCabinet is better in ways because it provides:
a. Autoscaling according to number of users
b. Sharing full containers easily between people. You can install pip/conda binaries and share with students/users.
c. Shared storage so nbgrader works seamlessly.
Here is a full comparison: https://datacabinet.info/pricing.html
Please excuse our landing page, it just got created today and we are fixing it.