I have a list of API call I want to make based off of a string list. Would it be OK to make each request an Op and call them from within a loop in another Op? Or should that be written in the Job or Graph?

Hi Kazushi, You shouldn’t be calling ops within other ops-- so if you want to break them into individual ops they should be composed in a graph. Alternatively you could just call them within the same op, it depends on your use case.