Yep. Got bitten HARD by this recently, $1.5k inter-az transfer charges that we never saw coming.
Our fault, I suppose -- but multi-az is prohibitively expensive if you need to run anything data heavy distributed.
Our fault, I suppose -- but multi-az is prohibitively expensive if you need to run anything data heavy distributed.
> but multi-az is prohibitively expensive if you need to run anything data heavy distributed.
If you communicate between your AZs via ALBs, multi-az is effectively free. Our bill is so high because within our Kubernetes cluster, our mesh isn't locality aware; it randomly routes to any available pod. 2/3rds of our traffic crosses AZs.