rnetes Gateway API</a></li><li role=none><a role=treeitem title="Describes the built-in Istio installation configuration profiles." href=/v1.21/docs/setup/additional-setup/config-profiles/>Installation Configuration Profiles</a></li><li role=none><a role=treeitem title='How to configure "compatibility versions", to decouple behavioral changes from releases.' href=/v1.21/docs/setup/additional-setup/compatibility-versions/>Compatibility Versions</a></li><li role=none><a role=treeitem title="Install and custom