[bbgm]

Like most things, this sounds good in practice but fails in reality. There are many AWS services that started with this question (Spot instances for one). But what people want to do with them is always something else when push comes to shove.

I've always felt there were a lot of background tasks that just need to be done but have no time sensitivity that could fit this model, but in reality it hasn't ever been something you can generalize to a point that it's worth building it out. Still haven't given up on the idea though :).