Your company has deployed a gaming application on Google Cloud Platform (GCP). The application runs on an autoscaling Google Kubernetes Engine (GKE) cluster, exposing a TCP endpoint, and is managed by a deployment with multiple replicas. A separate application service on Compute Engine, located in a different VPC (named ppp-network) but within the same region, requires access to the GKE-hosted application. What is the most efficient method to enable this access?