[djb_hackernews]

I do wish AWS had more granular EC2 billing, and I expect that to come soon since GCE offers it. But 2 things:

1) If you are at the scale of deploying several times an hour, the instance hour cost would probably look like a rounding error for your entire AWS spend, I'd imagine.

2) At that cadence you'll definitely benefit from using containers and a container scheduler (Kube, ECS, etc). Reuse the infrastructure but redeploy your apps to your hearts content.