You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
The ISTQB® Certified Tester Foundation Level (CTFL) certification is the cornerstone of essential testing knowledge, applicable to real-world scenarios across all software delivery approaches—Waterfall, Agile, DevOps, and Continuous Delivery. It provides a comprehensive understanding of testing terminology and concepts, making it relevant for anyone needing to demonstrate practical knowledge of software testing fundamentals. Recognized as a prerequisite to all other ISTQB® certifications, CTFL is the first step in the ISTQB® Certified Tester Scheme.
Content last reviewed 30 July 2026 · Up to date
What this certification covers, who it is written for, and what the exam itself looks like on the day.
What it validates, who it is written for, and the experience it assumes.
The ISTQB® Certified Tester Foundation Level (CTFL) certification is the cornerstone of essential testing knowledge that can be applied to real-world scenarios. The syllabus provides a comprehensive understanding of the terminology and concepts used in the testing domain worldwide, making it relevant for all software delivery approaches and practices, including Waterfall, Agile, DevOps, and Continuous Delivery.
CTFL certification is recognized as a prerequisite to all other ISTQB® certifications where Foundation Level is required. It equips candidates with the fundamental skills needed to understand what testing is and why it is beneficial, identify test approaches based on context, assess and improve documentation quality, and work effectively as part of a cross-functional team. The certification also covers test management principles, defect reporting, and the risks and benefits of test automation, providing a solid foundation for career progression in software testing.
The CTFL 4.0 certification is suitable for anyone who needs to demonstrate practical knowledge of the fundamental concepts of software testing. It is relevant for individuals in roles such as testers, test analysts, test engineers, test consultants, test managers, user acceptance testers, and software developers. Additionally, it is appropriate for those who require a basic understanding of software testing, including project managers, quality managers, software development managers, business analysts, IT directors, and management consultants. With the ISTQB® Certified Tester Scheme, testing professionals at all stages of their careers can benefit from the breadth and depth of knowledge offered, with the opportunity to pursue higher-level software testing qualifications such as the Core Advanced Levels, Specialist, and Expert Level certifications.
No specific experience is required, but a basic understanding of software development and testing concepts is beneficial. ISTQB recommends attending accredited training, though self-study is also an option. Familiarity with software development lifecycles and testing concepts; Basic understanding of software testing terminology; Interest in pursuing a career in software testing or quality assurance
Every domain and objective ISTQB measures, with the weight they carry on the exam.
The official ISTQB exam outline · checked 30 July 2026 · See the source
Everything ISTQB publishes about sitting it, and nothing we inferred.
No mandatory prerequisites — this certification has no required predecessor exam or credential.
The path ISTQB lays out, how the credential is kept, and where to book.
Step-by-step path to Certified Tester Foundation Level
The Certified Tester Foundation Level certification does not require renewal and is valid for life. Stay current with the latest technologies and maintain your certification.
Learn more about renewal requirementsThis certification is currently active and available. ISTQB maintains this certification to validate current skills and industry relevance.
Register for the exam through ISTQB Member Boards, ISTQB’s authorized testing partner.
Schedule your examVisit the official ISTQB certification page for exam policies and requirements.
View the official pageYour coach in the app reads what you have answered with the book closed and tells you one thing to do tonight. It will not count an answer you gave with the page open, and it will tell you when you are not ready.
See how the coach worksCTFL v4.0 is the latest version of the Foundation Level syllabus. It updates and expands the content to cover modern software delivery practices, including Agile, DevOps, and Continuous Delivery. Candidates who hold a previous version of the CTFL certification are not required to retake the exam, as the certification is valid for life.
Yes, the CTFL exam is available in multiple languages through ISTQB Member Boards. Non-native language speakers may receive an additional 25% exam time. Check with your local Member Board for available languages.
Yes, self-study using the official syllabus and recommended reading material is an option. However, ISTQB highly recommends attending accredited training to ensure the materials are relevant and consistent with the syllabus.
The retake policy is defined by the ISTQB Exam Structures and Rules. Typically, candidates must wait a specified period before retaking the exam. Refer to the official ISTQB Exam Structures and Rules document for details.
No, the CTFL exam is a multiple-choice exam with 40 questions. It does not include any hands-on or lab components.
The CTFL certification is relevant for testers, test analysts, test engineers, test consultants, test managers, user acceptance testers, and software developers. It is also suitable for project managers, quality managers, business analysts, and IT directors who need a basic understanding of software testing.
Yes, CTFL is a prerequisite for all other ISTQB certifications where Foundation Level is required. Holders can proceed to Core Advanced Level certifications (Test Analyst, Technical Test Analyst, Test Management), Specialist certifications, or Expert Level certifications.
Exam results are typically provided immediately after the exam for computer-based testing. For paper-based exams, results may take a few weeks. Check with your exam provider for specific timelines.
Every domain, every objective, and every concept ISTQB measures — each one written out.





Every objective below is a page you can open and practise now, without an account.
The official ISTQB exam outline · checked 30 July 2026 · See the source
In front of every objective the practice pages are already there, free and without an account. This is one objective, opened.
26 questions on this objective, five to a page. Every range above is a real page, open now, with no account.
The curriculum tells you what is on the exam. Proving you know it is a different job — and it is the one the closed-book run does.
The whole bank is open. 5 questions to a page, every answer explained, and a discussion thread on each one.
Every objective, and every page range, is a link — so you can pick up exactly where you left off.
Short enough to finish, long enough to matter.
Not only which one is right — why the others are wrong.
Ask, answer, and vote. Every question has its own thread.
These are not trivia. Each one is written against a concept in the book, so when you get one wrong there is somewhere to go and find out why.

The pages shown here come from our AI-900 book — an example of how each concept is written in plain language and, where the idea needs one, drawn as a full page you can take in at a glance.





Three reasons, and each one is a real finding rather than a slogan.
You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
The whole idea at onceWhere it starts, what happens in the middle, what comes out, and the mistake to avoid.
Multimedia principle · Mayer
The look-alikes sit togetherThe pairs the exam tests are drawn side by side, so the difference is seen, not told.
Dual coding · PaivioYou are never asked to read a poster here — only to see how one is built. After that, every other page is legible at a glance.

The idea as a sequence, followed with a finger before a word is read.
What it is, how the machine learns it, when it is the right tool.
The distinction the exam tests, given its own box instead of buried in prose.
The sentence to carry into the exam room.
This is the part that teaches. The illustration and the written explanation stay where they are while you work, so a scenario stops being a memory test and becomes something you can simply look at.
A smartphone uses AI to unlock when the owner looks at the camera. Which AI capability is being used?

The same questions come back with the book closed — that run is the one that counts. After it, your coach picks one thing for tonight, sized to the time you have, and brings pages back before you lose them.
Testing effect · Roediger & Karpicke 2006 · spacing effect · Cepeda et al. 2006
Where the exam is defined, scheduled and scored.
We link to them rather than repeat them, so nothing here goes stale behind them.
We build from the official skills outline, not from a summary of it — 26 objectives, 157 concepts written under them, and free questions against every one. When ISTQB changes the outline, this page changes with it.
That is the only question worth answering the night before, and no link answers it. You answer it by taking the questions with the book closed, and seeing what comes back.