Each app gets an HTTPS listener on the Gateway with its existing certificate, an HTTPRoute, and a ReferenceGrant for that certificate. The routes drop Envoy's 15s request timeout, as nginx has no overall limit either. Argo CD and Longhorn follow separately; the Ingresses stay until the switch-over.
ESO 0.16.2 is the one release that serves both v1beta1 and v1. 0.17
stops serving v1beta1, so manifests still on v1beta1 would fail to sync
from the next hop on. For these resources the schemas are name-identical
(conversion strategy None); only the apiVersion changes.