Why it matters

K8s is portable in theory. Understanding cloud differences shapes real deployments.

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The architecture

Core: upstream K8s API.

Cloud add-ons: IAM integration, load balancer controllers, storage CSI drivers.

Managed K8s comparisonEKSAWS integrationsGKEGCP integrationsAKSAzure integrationsPortability real for core K8s; cloud add-ons diverge
Cloud K8s differences.
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How it works end to end

Node management: managed node groups (EKS), Autopilot (GKE), Virtual Node Sets (AKS).

Networking: cloud-native CNIs.

Storage: CSI drivers per cloud.

IAM: IRSA (AWS), Workload Identity (GCP), Managed Identities (Azure).