Kind of wish auth0-lite was in github... Would also be interesting to get a followup Q&A on his impressions in using React, and iirc Redux.
I do find it interesting how much he's leveraging AWS' services, and Lambda in particular. Also, given that he's using go, curious if the startup for lambda is reduced, and by how much. I'd be more interested in seeing what steps Amazon is taking to improve Lambda startup time, for better scaling.