I think "a regular web app" is interactive... 3s would rarely be acceptable, much less 30s. Not that it never happens, but it should be rare enough that the co

I think "a regular web app" is interactive... 3s would rarely be acceptable, much less 30s. Not that it never happens, but it should be rare enough that the cost of the lambda isn't the main concern. (Or if it's not rare, your focus should be on fixing the issue, not really the cost of the lambdas.) Anyway, I think you'd typically limit the lambda run time limit to something a lot shorter than 30 sec.