Author here, let me know if you have any questions about the content.
Importance of a cloud product obviously is one!
Maybe more important are industry expectations, like knowing what a multinational tech company is looking for when they do a proof-of-concept with a database startup.
The most fun lessons are the ones I'm learning at Fauna, because we are running a different hypothesis than Couchbase, and it lends itself to different goals, processes, and atmosphere.