These are good reasons, but how many projects really have such a need to scale, for example?

If you have let’s say a massive developer organization, some level of abstraction so you don’t have to manage provisioning servers/hosts and invest time in undifferentiated (no or low value add) activities is great.

The cost of these function as a service solutions is very high though, even in those scenarios, at least from my own experience.

A lot of people rush to these solutions and CTOs blindly sign off without realizing it’s just added tech debt.