I understand there are various ways to get external traffic into the cluster - Ingress, cluster IP, node port and load balancer. I am particularly looking into the Ingress and k8s and from the documentation k8s support AKS, EKS & Nginx controllers.
To implement Ingress, understand that we need to configure an Ingress Controller in the cluster. My query is whether Nginx ingress & proxy are an offering of core k8s (integrated / embedded)? Might have overlooked, did not find any documentation where it is mentioned. Any insight or pointer to documentation if stated above is true is highly appreciated.