ecific prerequisites for installing Istio in ambient mode." href=/v1.21/docs/ops/ambient/install/platform-prerequisites/>Platform-Specific Prerequisites</a></li></ul></li><li role=treeitem aria-label="Upgrade Guide"><button aria-hidden=true tabindex=-1></button><a title="Upgrade guide for Istio Ambient mesh." href=/v1.21/docs/ops/ambient/upgrade/>Upgrade Guide</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Upgrading an ambient mode installation with Helm (Expe