A side-by-side comparison of 36 professional certifications across Project Management, Cloud & Platform, Networking, Cybersecurity, Data & AI, Finance & Accounting, IT Service Management, Software Development. Compare verified vendor examination formats, passing rules, renewal requirements, and domain outlines.
| Attribute | CKA Cloud Native Computing Foundation (CNCF) | Azure AZ-204 Microsoft | Java OCP Oracle | Docker Associate Docker |
|---|---|---|---|---|
| Full Title | Certified Kubernetes Administrator (CKA) | Microsoft Certified: Azure Developer Associate (AZ-204) | Oracle Certified Professional: Java SE Developer | Docker Certified Associate |
| Issuing Body | Cloud Native Computing Foundation (CNCF) | Microsoft | Oracle | Docker |
| Credential Tier | Professional | Associate | Professional | Associate |
| Domain Area | Software Development | Software Development | Software Development | Software Development |
| Exam Format | A remote, live, hands-on performance exam in a terminal against a real cluster, covering the published objectives under a time limit. | A proctored role-based exam with scenario items and case studies covering the skills measured for the Azure Developer Associate role. | Proctored multiple-choice programming exams, with the associate and professional levels tested through separate exams in the current Java SE release. | A proctored exam of multiple-choice items covering the published objectives, including container and image management and orchestration concepts. |
| Penalty Rule | Set by the issuer — most vendor exams apply none | Set by the issuer — most vendor exams apply none | Set by the issuer — most vendor exams apply none | Set by the issuer — most vendor exams apply none |
| Validity Period | CNCF certificates are valid for three years and renewed by re-taking the certification exam, per the CNCF certification policy. | Credentials renew annually through a free online renewal assessment. | Oracle Java credentials are valid for a fixed period and renewed by re-taking the associated upgrade exam, per Oracle's certification policy. | Docker certifications are valid for two years and renewed by re-taking the exam, per Docker's published policy. |
| Prerequisites | CNCF publishes no formal prerequisites for the CKA; it expects Linux administration experience, which the certification path recommends beforehand. | Microsoft publishes no formal prerequisites for role-based Associate certifications; preparation is expected to match the skills measured. | Oracle sets no formal prerequisites for the Java SE Developer exams; they are designed for working Java developers. | Docker publishes no formal prerequisites for this credential; container fundamentals experience is expected. |
| Official Domains | 4 domains (Cluster architecture, installation and lifecycle, Workloads, networking and storage...) | 4 domains (Develop Azure solutions with data and messaging services, Build and deploy application code...) | 4 domains (Java syntax, OOP and generics, Collections and the standard library...) | 4 domains (Containers and images, Container networking and storage...) |
| Actions | View Blueprint → | View Blueprint → | View Blueprint → | View Blueprint → |
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