b><ol><li><a href=/v1.9/ title="Connect, secure, control, and observe services.">Istio</a></li><li><a href=/v1.9/docs/ title="Learn how to deploy, use, and operate Istio.">Docs</a></li><li><a href=/v1.9/docs/concepts/ title="Learn about the different parts of the Istio system and the abstractions it uses.">Concepts</a></li><li>What is Istio?</li></ol></nav><article aria-labelledby=title><div class=title-area><div style=width:100%><h1 id=title>What is Istio?</h1><p class=byline><span title="825 words"><svg c