Extend Istio Ambient Mesh with Kgateway as Waypoints

Ambient mesh is the new sidecarless data plane mode in the Istio service mesh . One of the key innovations of ambient mesh is that it splits Istio’s functionality into two distinct layers: a lightweight, secure overlay layer (implemented by a purpose-built node proxy called ztunnel ) and a Layer 7 processing layer (implemented by L7 proxies called waypoints ). As we designed ambient mesh with two distinct layers, we purposefully kept the secure overlay layer very lightweight with minimal function.