Nice to see this on HN! For folks that don't know what this is... it's a free hosted Jupyter service, provided as a "thank you" to the Python, Jupyter, and general OSS community by the Microsoft Python team.

Regarding the perf #'s - just a heads up that you were probably on that VM all by yourself :). Though once enough people sign in or cpu threshold gets to a certain level, new VMs are allocated.

PS On a related note, we are wrapping up at PyCon in Portland, and one of the hit swags was the "Jupyter Notebook Notebook" :). See pics here:

https://goo.gl/photos/L9C4fq6AsPxU7bfq5

/disclaimer: team lead/