Actually this is the guide line article for beginners to deploy WordPress application on Kubernetes cluster and I have used the "minikube" cluster for the demonstration. If we apply same configurations on "Kubeadm" or cloud base cluster (e.g EKS, AKS or GKE), then we should have a scalability becuase we are using the PV and PVC for data storage and Loadbalancer Service type for load distribution.

Its my suggestion to use the similar configurations on cloud base cluster for proper high availability and scaleability.