One obvious thing to keep in mind is the profit model. AWS at least prices lambda, api gateway, and rds so it's very cheap and attractive for projects with low

One obvious thing to keep in mind is the profit model. AWS at least prices lambda, api gateway, and rds so it's very cheap and attractive for projects with low resource needs. As soon as it gets popular though, they own your ass until you migrate off it. We looked at one application on it and it worked out to billions monthly for high traffic loads, vs much less if we hosted on their regular boxen ourselves. "operational tools" might be the right answer here - use it for something that will have bounded scale and you can predict the expense.