I take "where possible" to mean that what you describe should be considered an exception instead of a rule, which I agree with. I do have some thin services whi

I take "where possible" to mean that what you describe should be considered an exception instead of a rule, which I agree with. I do have some thin services which are libraries, but above and beyond directly importing libraries is preferred. With edge functions becoming more popular, this also seems to be the preferred pattern, having "fat" edge functions with shared code, vs many small edge functions calling each other.