Does AWS Sagemaker continue running when I go offline?
I couldn't stay at work forever, so I left the Sagemaker notebook running, closed my computer and commuted home.  That evening when I returned to my Sagemaker Notebook, the work had completed running and all the cells and their variables continued to be accessible in memory.  

Long story short, if you disconnect from Sagemaker but leave your notebook running, it will continue to process for you.