Your Kubernetes cluster is humming on Amazon EKS. Your machine learning jobs, though, live on Google Compute Engine. You could copy credentials, juggle IAM roles, and hope nothing breaks. Or you can treat both platforms as one controlled system, with policies that travel wherever your workloads do.
Amazon EKS delivers managed Kubernetes built on AWS primitives like IAM, security groups, and autoscaling nodes. Google Compute Engine offers flexible virtual machines, often cheaper and easier to scale for ephemeral compute or GPU-heavy work. Many teams pair them for hybrid or cost-optimized deployment, but identity and networking usually get messy first.
The trick is understanding how control planes and worker nodes talk across clouds. You keep EKS as the orchestrator, while Compute Engine provides raw compute power through VMs connected via VPC peering or shared networking. You issue service accounts and roles that map cleanly between AWS IAM and GCP IAM, tied together through OpenID Connect (OIDC) federation. That keeps artifacts, pods, and credentials trusted end-to-end without opening broad network tunnels.
To wire this securely, think in three steps. First, establish mutual identity. AWS IAM roles for service accounts (IRSA) can issue tokens validated by GCP’s workload identity federation, skipping static credentials. Second, enforce least privilege with scoped permissions: just-in-time compute nodes that self-register then vanish when work completes. Third, monitor and log through one channel, sending Kubernetes audit data to Cloud Logging so both clouds tell one coherent story.
This pattern works because you treat clouds as interchangeable endpoints, not separate empires. Amazon EKS runs the control loops. Google Compute Engine feeds raw horsepower. Together, they extend your cluster across boundaries without breaking compliance models like SOC 2 or ISO 27001.
Common benefits of the EKS and Compute Engine combination: