[yellowapple]

"A few examples of NoOps platforms that fit the above criteria are Heroku, Amazon Lambda, and Google Firebase."

I don't know about Lambda and Firebase, but Heroku is not "NoOps" in my experience. You still have to deal with dyno configurations and linking things together, and even have to deal with security updates every once in awhile (Heroku's "stacks" are not supported forever).

Meanwhile, this sort of vendor lock-in is a great way to murder a startup before it even learns how to walk. These services are not cheap; hiring a "devops engineer" or a proper sysadmin will almost always pay off in the long run, since they'll be much cheaper (and much better at their intended purpose) than the likes of Heroku when you actually do need to scale beyond the prototyping stage.