Shameless plug: we have an open source tool you can build stuff like this on. It'll run any logic you can implement in JavaScript, we have people doing things l

Shameless plug: we have an open source tool you can build stuff like this on. It'll run any logic you can implement in JavaScript, we have people doing things like "send traffic to backend with lowest latency" already, it'd be pretty easy to pull in some API data to pick based on cost. https://github.com/superfly/fly https://github.com/superfly/fly