Setting up Azure Application Gateway as a Kubernetes ingress

An ingress in Kubernetes is an object that is used to route HTTP and HTTPS traffic from outside the cluster to services in a cluster. Exposing services using an ingress rather than exposing them directly, as you've done up to this point—has a number of advantages. These advantages include the ability to route multiple hostnames to the same public IP address and offloading TLS termination from the actual application to the ingress.

To create an ingress in Kubernetes, you need to install an ingress controller. An ingress controller is software that can create, configure, and manage ingresses in Kubernetes. Kubernetes does not come with a preinstalled ingress controller. There are multiple implementations of ingress controllers, and a full list is available at this URL: https://kubernetes.io/docs/concepts/services-networking/ingress-controllers/

In Azure, application gateway is a Layer 7 load balancer...