Which Kubernetes certification should I start with?

Most beginners start with KCNA; platform/admin roles usually start with CKA; application developer roles usually start with CKAD.

What's the prerequisite for CKS?

You must have taken and passed CKA prior to attempting the CKS exam (as stated on the CNCF CKS page and the Linux Foundation FAQ).

Where can I register for Kubernetes certifications?

All CNCF Kubernetes certifications are available through the Linux Foundation Training & Certification portal, which offers individual exams and bundled packages.

KCNA vs KCSA vs CKA vs CKAD vs CKS: Which Kubernetes Certification Should You Get?

This page compares the five most common CNCF Kubernetes certifications: KCNA, KCSA, CKA, CKAD, and CKS. The goal is simple: help you choose the best next step based on your role and the skills employers expect. All exams are available through Linux Foundation Training & Certification.

Quick comparison table#

Certification	Best for	Exam type	Prereqs	Signals
KCNA	Beginners / foundations	Multiple-choice	None	Baseline Kubernetes + cloud native literacy
KCSA	Security foundations	Multiple-choice	None	Security fundamentals and risk/compliance thinking
CKA	Platform/Admin/SRE	Performance-based (hands-on)	None	Cluster ops + troubleshooting competence
CKAD	App developers on K8s	Performance-based (hands-on)	None	App deployment/config/maintenance on Kubernetes
CKS	Platform security / DevSecOps	Performance-based (hands-on)	CKA required	Kubernetes security (supply chain + runtime + hardening)

How to choose (simple decision rules)#

If you're new: start with KCNA.
If you run clusters: start with CKA.
If you ship apps on Kubernetes: start with CKAD.
If security is your direction: plan for CKS (but pass CKA first); KCSA can help build the foundations.

Common "future-proof" paths#

Platform engineer path: KCNA (optional) → CKA → CKS
Developer path: KCNA (optional) → CKAD → (CKA later if you operate clusters)
Security foundations path: KCNA → KCSA → CKA → CKS

Training & certification (Linux Foundation)#

If you want official training and exam bundles, reference: Linux Foundation Training & Certification. If you're aiming for a broad "all-rounder" credential stack, the Linux Foundation Kubestronaut bundle groups these five exams at a significant discount.

FAQ#

Is CKS harder than CKA?#

CKS is security-focused and requires you to have passed CKA first. In practice, most candidates find CKS harder because you must combine Kubernetes skills with security problem-solving under time pressure.

Do employers care about KCNA?#

KCNA can help if you're early-career, switching domains, or need a credential to validate fundamentals. For senior roles, hands-on certs (CKA/CKAD/CKS) usually carry more weight.

Where can I register for these exams?#

All CNCF Kubernetes certifications are administered through Linux Foundation Training & Certification, which also offers training courses and exam bundles.