I think it depends a lot on the application use cases and requirements. Things like: Will there be spikes in demand 50x higher than baseline usage? I.e. how f

I think it depends a lot on the application use cases and requirements. Things like: Will there be spikes in demand 50x higher than baseline usage? I.e. how fast and efficiently the system needs to scale up? What level of reliability is needed? I.e. is it really a big problem if the system goes down for an hour a handful of times throughout a given time period?