About CertLabPro

CertLabPro is built and operated by 3iDATA, LLC, a private company registered with Dun & Bradstreet under D-U-N-S® Number 036974641. The site, the iOS app, and the Android app are produced by the same team. There are no external investors, no advertising contracts, and no third-party content licensors — we write, review, and ship every question ourselves.

We deliberately do not list individual contributors by name on this page. The editorial team includes engineers and certified practitioners across the cloud, security, Kubernetes, and platform domains we cover. As the team grows or named subject-matter experts are added to specific tracks, we will list them here.

Every practice question is written from scratch against the official exam guide for the relevant certification. We do not scrape, copy, or paraphrase questions from any other source — including the actual certification exams, which are confidential. Our questions are designed to test the same concepts, in the same proportions, and at the same difficulty level as the official exam, while being legally and ethically distinct.

For each certification we cover, the workflow is: (1) read the current official exam guide and domain weighting; (2) draft questions per domain in proportion to the published weights; (3) write four plausible answer options per question, with one or more correct depending on the question type; (4) write an explanation that justifies the correct answer and identifies why each distractor is wrong; (5) cite the relevant section of the official documentation in our internal reference notes.

Questions are then reviewed by a second team member before being published. We aim to ship typo and factual fixes within one business day of identification.

Our authoritative sources for each certification are the official exam guides, official documentation, and official whitepapers from the certification provider. For example: AWS Certification exam guides at aws.amazon.com/certification, Microsoft Learn at learn.microsoft.com/credentials, Google Cloud certification pages at cloud.google.com/learn/certification, CNCF / Linux Foundation pages at cncf.io and training.linuxfoundation.org, and HashiCorp Developer at developer.hashicorp.com/certifications.

For career impact, prerequisites, and industry context, we reference public market data: published salary ranges (where available from official sources), the U.S. Bureau of Labor Statistics, and aggregate compensation data from levels.fyi, Glassdoor, and similar public references. All such data is approximate and presented with the relevant caveats — you should not treat any salary figure on CertLabPro as a guarantee.

Certification exams change. Official providers retire, replace, and version their exams on irregular schedules — sometimes with months of advance notice, sometimes overnight. We track changes by monitoring official certification pages, provider announcements, and changes to exam guide PDFs.

When a provider announces a new exam version (for example, the Terraform 003 → 004 transition in January 2026, or the Google Cloud migration from Kryterion to Pearson VUE in early 2026), we: (a) update the affected cert hub page to reflect the new version, fee, and policy; (b) re-write any questions whose underlying technology or syllabus has changed; (c) update the per-provider Exam Info page with the new registration flow.

Every cert hub page surfaces a "Last reviewed" date so you can see how recent the content is. We also maintain a per-page Last reviewed metadata field used by search engines.

We do not sell your data. CertLabPro stores all study data locally on your device — exam attempts, scores, notes, flashcard state, and progress never leave your browser or phone. The website uses Google Analytics 4 (with explicit consent) for aggregate, anonymized page-view metadata; the mobile apps use no analytics. Full details are in our Privacy Policy.

We do not display advertising. There are no ad networks, no sponsored content, no affiliate links to certification providers in our practice questions, and no paid placements. Our revenue comes solely from optional mobile in-app purchases for additional certification packs.

We do not claim to provide "real" exam questions. Anyone selling actual exam questions is violating the certification provider's terms of service. Our content is original practice material aligned to the official exam guide.

All practice questions, explanations, and the user interface are translated into 10 languages: English, Spanish, Portuguese (Brazilian), French, German, Chinese (Simplified), Japanese, Russian, Hindi, and Hebrew (right-to-left). Translations are reviewed by speakers of each target language. The locale-prefixed URL structure (for example, /es/cert/aws-saa-c03) makes every page indexable by Google, Bing, and other search engines per language.

The website is built to WCAG 2.1 AA accessibility standards: keyboard navigation, screen reader support, sufficient color contrast in light and dark themes, and respect for prefers-reduced-motion. The mobile apps target Apple's Accessibility Inspector and Google's TalkBack guidelines. Accessibility issue reports are handled by the same team that handles content corrections — see Section 8.

The website is free to use, with no account required and no paywall. The iOS and Android mobile apps include 4 free certifications (AWS Cloud Practitioner CLF-C02, Microsoft Azure Fundamentals AZ-900, Google Cloud Digital Leader, and Kubernetes KCNA) plus optional in-app purchases for additional individual certifications, provider bundles, and an all-access pass.

In-app purchases are processed by the App Store and Google Play. CertLabPro does not see, collect, or store payment information. There is no subscription model — purchases are one-time and unlock content permanently on the device that bought them.

If you find an incorrect answer, an outdated question, a translation issue, or an accessibility problem, please email us at {email} with a short description and (if possible) the certification code, question number or text, and the language you encountered the issue in. Confirmed corrections are typically published within one to three business days.

For general inquiries, partnership questions, or media requests, the same email address reaches the team. The full contact details, including legal address and DMCA agent, are on our Contact page.