OCP vs EKS vs AKS — clear, real-world comparison
You’re comparing three ways to run Kubernetes:
- Red Hat OpenShift (OCP) → full enterprise platform
- Amazon EKS → AWS-managed Kubernetes
- Azure Kubernetes Service (AKS) → Azure-managed Kubernetes
One-line mental model
- OCP = Kubernetes + platform + opinionated tooling
- EKS / AKS = Kubernetes as a service
⚙️ Core architecture difference
OpenShift (OCP)
- You manage:
- cluster (unless using ROSA/ARO)
- nodes
- Comes with:
- registry
- CI/CD
- security policies
- operators
- Runs:
- on-prem, cloud, hybrid
EKS (AWS)
- AWS manages:
- control plane ✅
- You manage:
- worker nodes (or use Fargate)
- Uses AWS ecosystem:
- IAM
- ALB / NLB
- VPC networking
AKS (Azure)
- Azure manages:
- control plane ✅
- You manage:
- node pools
- Uses Azure ecosystem:
- Azure AD
- Load Balancer
- VNets
Security model
| Feature | OCP | EKS | AKS |
|---|---|---|---|
| Default security | 🔒 Very strict | Moderate | Moderate |
| Pod restrictions | SCC (strong) | PSP/OPA (optional) | Azure policies |
| Identity | RBAC + OAuth | IAM roles | Azure AD |
OCP is the most locked-down by default.
Networking & exposure
| Feature | OCP | EKS | AKS |
|---|---|---|---|
| External access | Routes | Ingress + ALB | Ingress + Azure LB |
| CNI | OVN-Kubernetes | AWS VPC CNI | Azure CNI / Kubenet |
OCP’s Routes = simpler developer experience
EKS/AKS = more cloud-native integrations
CI/CD & Developer Experience
| Feature | OCP | EKS | AKS |
|---|---|---|---|
| Built-in CI/CD | ✅ Yes (BuildConfig, pipelines) | ❌ No | ❌ No |
| Container registry | ✅ Built-in | ❌ (ECR external) | ❌ (ACR external) |
| Developer UI | ✅ Strong | Minimal | Minimal |
OCP is a developer platform, not just infra.
Operations & automation
| Feature | OCP | EKS | AKS |
|---|---|---|---|
| Operators | Core concept | Optional | Optional |
| Cluster upgrades | Operator-driven | AWS-managed | Azure-managed |
| Add-ons | Built-in | AWS add-ons | Azure add-ons |
Cost model (important)
- OCP
- license + infra cost
- EKS
- control plane fee + AWS resources
- AKS
- control plane often free + Azure resources
OCP is usually the most expensive.
Where each shines
Use OpenShift when:
- enterprise / regulated environments
- on-prem or hybrid cloud
- need built-in CI/CD + security
- platform engineering teams
Use EKS when:
- you’re deep in AWS ecosystem
- want flexibility + AWS integrations
- prefer DIY platform setup
Use AKS when:
- you’re in Azure ecosystem
- want simplest managed Kubernetes
- using Azure AD, DevOps, etc.
Real-world differences that matter
1. Developer experience
- OCP → “push code → app runs”
- EKS/AKS → you wire everything yourself
2. Security defaults
- OCP → restrictive (safe by default)
- EKS/AKS → flexible (you configure security)
3. Lock-in
- OCP → Red Hat ecosystem
- EKS → AWS lock-in
- AKS → Azure lock-in
Interview-ready answer
“OpenShift is a full Kubernetes platform with built-in CI/CD, registry, and strong security, while EKS and AKS are managed Kubernetes services where the cloud provider manages the control plane. OCP is more opinionated and enterprise-focused, whereas EKS and AKS provide more flexibility but require assembling additional components.”
Infra Cloud Solutions 