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Practice with purpose. Pass with confidence.

Mastery Cloud delivers exam-realistic practice for Cloud & IT certifications—AWS (CLF-C02, SAA-C03), Azure (AZ-900, AZ-104, AZ-204, AZ-305), Google Cloud Associate Cloud Engineer, Snowflake SnowPro Core (COF-C02), and CompTIA A+, Network+, and Security+. Use the Mastery Cloud web app in your browser, or pair it with the iOS and Android apps for mobile drills. Mastery Securities supports securities and insurance licensing for FINRA/NASAA, CIRO/CSI, and LLQP.

Mastery is built and operated by Tokenizer Inc. Independent exam-prep tools for cloud, finance, and professional certifications.

2,400–2,800+ questions per core exam Cloud & securities certifications Exam-realistic timing & scoring Start free · No ads

New · Cloud & IT

AWS Certified Cloud Practitioner (CLF-C02) — Practice Exams book now available

15 full-length CLF-C02 practice exams (975 questions) with teaching-focused explanations, available as PDF and EPUB. A free Lite edition with 3 full exams lets you try the format before you buy.

View CLF-C02 book

Available now


What do you want to pass?

Securities — U.S. (FINRA/NASAA)

SIE • Series 7 • 63/65/66 • 24 • 9/10 • and more

Browse FINRA/NASAA

Securities & Insurance — Canada

Canadian Securities (CIRO/CSI) and LLQP licensing content focused on real exam practice.

Browse Canadian licensing

Project Management (PMI)

PMI study hubs for CAPM®, PMP®, PgMP®, PfMP®, and PMI-PMOCP™ with syllabi, study plans, and practice.

Browse PMI exams

Cloud & IT Certifications

Includes AWS CLF-C02 and key Azure exams (AZ-900, AZ-204, AZ-104, AZ-305), with GCP and other cloud certifications to follow.

Browse Cloud & IT

How it works

  1. Pick your exam and take a quick diagnostic.
  2. Drill weak topics or run full, timed mock exams.
  3. Review step-by-step explanations and track progress.

Independent prep tool. Not affiliated with FINRA®, NASAA, CFA Institute®, AICPA®, PMI®, CompTIA®, CIRO/CSI®, or CPA Canada. All trademarks belong to their owners.


Built to help you actually learn

Exam-realistic

Blueprint-weighted question banks, realistic timing, and calibrated difficulty.

Crystal-clear explanations

Every item shows a step-by-step rationale and why other choices are wrong.

Adaptive review

Drill weak areas, use spaced repetition, and watch your mastery climb.

Always current

Weekly updates as exam providers revise outlines and weightings.

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