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Amazon EKS (Elastic Kubernetes Service)

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Certified Kubernetes-conformant managed service delivering high-availability control planes and seamless AWS VPC integration.

COMPUTE
•Amazon Web Services

Certified Kubernetes-conformant managed service delivering high-availability control planes and seamless AWS VPC integration.

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GCP ➔ AWS Bridge
Fast-Track Mental Model Translation

Coming from Google Cloud?

Compare with Google Kubernetes Engine (GKE)

Both are industry-leading managed Kubernetes platforms with automated control plane upgrades and enterprise security.

What's Conceptually Identical
  • Certified Kubernetes conformant: runs standard kubectl commands, Helm charts, and Custom Resource Definitions (CRDs).
  • Managed multi-zone control plane with automated patch upgrades and high-availability SLAs.
  • Pod-level cloud IAM federation (AWS IRSA vs GCP Workload Identity).
Key Architectural Shifts in AWS
  • Autopilot vs Karpenter: GKE Autopilot manages node provisioning completely serverlessly; EKS uses Karpenter for rapid JIT EC2 node optimization.
  • Networking: GCP uses VPC-native Alias IP ranges; AWS EKS uses the AWS VPC CNI which consumes secondary ENI IP addresses (requiring careful CIDR planning).
  • Control Plane Pricing: Both charge $0.10/hour per cluster, but GKE offers one free cluster per billing account.
Syntax & Command Translator
Configure Kubectl Context
GCP:gcloud container clusters get-credentials my-cluster --region us-central1
AWS:aws eks update-kubeconfig --region us-east-1 --name prod-cluster
List Worker Nodes
GCP:kubectl get nodes -o wide
AWS:kubectl get nodes -o wide

What is Amazon EKS (Elastic Kubernetes Service)?

Amazon Elastic Kubernetes Service (Amazon EKS) is a managed Kubernetes service that makes it easy to run Kubernetes on AWS and on-premises. EKS runs the upstream, certified Kubernetes control plane across at least 3 Availability Zones for high availability, automatically detects and replaces unhealthy control plane nodes, and integrates natively with AWS networking (VPC CNI), security (IAM OIDC / IRSA), and autoscaling (Karpenter).

Decision Guide: When to Choose This Service

When to Use Amazon EKS (Elastic Kubernetes Service)

Use Amazon EKS when deploying enterprise containerized platforms requiring standard Kubernetes APIs, Helm charts, complex Service Meshes (Istio, Linkerd), GitOps pipelines (ArgoCD), multi-cloud portability, or advanced pod-level networking.

When NOT to Use (Recommended Alternatives)

Do NOT use Amazon EKS for simple web microservices where the operational overhead of Kubernetes manifests, Ingress controllers, and CNI management outweighs the benefits (use AWS App Runner or AWS Fargate on ECS instead).

Core Architectural Pillars

Managed Control Plane

Highly available Kubernetes API server and 3-node etcd cluster with automated backup snapshots ($0.10/hour).

IAM Roles for Service Accounts (IRSA)

OIDC federation granting least-privilege IAM credentials directly to Kubernetes pods.

AWS VPC CNI Plugin

Direct assignment of routable VPC IP addresses to pods without overlay network encapsulation.

Karpenter Autoscaler

High-speed, right-sized JIT node provisioning launching optimal EC2 instances in under 45 seconds.

AWS Load Balancer Controller

Automatically provisions and configures ALBs and NLBs based on Kubernetes Ingress and Service resources.