Webinar

Multi AZ by Default, Local by Design: Cut Cross Zone Traffic Costs with Cilium

Virtual

Designing cost efficient multi AZ Kubernetes networking

Running Kubernetes across multiple availability zones improves resilience, but introduces hidden costs. Cross-zone traffic can increase cloud spend and add latency between services.

This session shows how to keep the benefits of multi-AZ setups while avoiding these downsides. You will learn how Cilium enables local-by-design traffic patterns, keeping communication within the same zone where possible, while still ensuring seamless failover.

We walk through how Kubernetes service routing creates cross-zone traffic and how to adjust this using Cilium features like topology-aware routing and node-local traffic handling.

By the end, you will understand how to design clusters that are resilient and cost efficient without sacrificing performance.

What You Will Learn
  • How cross-zone traffic is created in Kubernetes
  • How Cilium enables locality-aware routing
  • How to reduce cross-zone traffic costs
  • How node-local traffic handling works
  • How to design efficient multi-AZ clusters

Learn how to run resilient multi AZ Kubernetes clusters while keeping traffic local, reducing cross zone costs and improving performance with Cilium.

  • Dean Lewis, Senior Technical Marketing Engineer

    Dean Lewis is a Senior Technical Marketing Engineer at Isovalent - the company behind the open-source cloud native solution Cilium. Dean had a varied background working in the technology fields, from support to operations to architectural design and delivery at IT Solutions Providers based in the UK, before moving to VMware and focusing on cloud management and cloud native, which remains as his primary focus. You can find Dean in the past and present speaking at various Technology User Groups and Industry Conferences, as well as his personal blog.

June 25, 2026

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