stio: ambient mode and sidecar mode. The former is still on the way, the latter is the classic one. Therefore, the coexistence of ambient mode and sidecar mode should be a normal deployment form and the reason why this blog may be helpful for Istio users.</p><h2 id=background>Background</h2><p>In the architecture of modern microservices, communication and management among services is critical. To address the challenge, Istio emerged as a service mesh technology. It provides traffic control, security, and su