Comment by appstorelottery

Running up a shitload of instances for testing and leaving all of them running overnight. Each of these instances continually rendered 4k video data to storage. This kind of test was supposed to be 1000x smaller, running for at most 10-20 seconds at time. He had written his own provisioning system which - according to his report - failed to properly manage instances "weird" edge case. No kidding.