Who Is This For?
You should read this if you run Kubernetes and/or Istio on a public cloud, and you care about your cloud bill. Cloud providers charge money for data egress, including data leaving one availability zone destined for another. If your Kubernetes deployments span availability zones, you are likely being charged for egress between internal components. Even if you don’t run Kubernetes/Istio, you’ll still run into cross-zone data egress costs, which this article will help you understand and minimize.