In general I think the answer to your question is yes. If you have sustained load, the environment will often be reused. When that happens, there is little “idle” time that you’re billed for.

I don’t mean to imply that Lambda Web Functions are a bad fit for every workload, just that they are a bad fit for our workload as a result of this behavior.

Edit: I made an update to the post to hopefully clarify this.