A generic "build credit" term could be better, maybe - with some details about what one credit gets you. Maybe one build-credit is normalized to "One minute on an 'n1-standard-1' with 4GB of RAM and 40GB of storage."
Under a system like that, users could maybe choose between a couple of different worker types. Or if there's only ever the one type, periodically the 'n1-standard-1' could be swapped out for whatever is the latest-greatest for the same price.
Under a system like that, users could maybe choose between a couple of different worker types. Or if there's only ever the one type, periodically the 'n1-standard-1' could be swapped out for whatever is the latest-greatest for the same price.