You search for ISTQB and end up on pages for ISTQB, ASTQB, and AT*SQA. None of them clearly explain how they connect. It looks like you are comparing three options when you are actually looking at three different layers of one system. ISTQB is the certification. ASTQB is the U.S. board that operates inside it. AT*SQA is where you go to actually buy and take the exam.
AT*SQA is open to candidates worldwide. If you are ready to buy, that is where to go.
ISTQB stands for International Software Testing Qualifications Board. It is the global body that owns the certification, writes the exam content, and sets the path from Foundation Level through Advanced and Expert. Over one million testers worldwide hold an ISTQB certification. When a job posting lists ISTQB as a requirement, this is the organization and credential behind that requirement. ISTQB does not run exam centers or sell exam vouchers directly to candidates. That is handled by a network of national member boards and their exam providers, which is where ASTQB comes in.
ASTQB stands for the American Software Testing Qualifications Board. It is the official U.S. member board within the ISTQB system, responsible for representing ISTQB in the United States and maintaining the official American English version of the exam. ASTQB is not a competitor to ISTQB. It is the U.S. chapter of it. The certification candidates earn through the ASTQB route carries the ISTQB name and is recognized by the same employers worldwide. What ASTQB adds is the American English exam format and U.S.-specific career tools like the Official U.S. List of Certified Testers. If you want a second quick pass on the U.S. version of that relationship, this ISTQB FAQ covers it cleanly.
AT*SQA is ASTQB's global exam provider. It is the platform where candidates purchase and sit the exam through the ASTQB route. AT*SQA delivers the official American English ISTQB exam that ASTQB created and is open to candidates anywhere in the world, not just people in the United States. When you buy through AT*SQA you are on the ASTQB-backed route, and the ISTQB certification you earn at the end is globally recognized.
This is the part people miss most often. Because ASTQB is the U.S. board, candidates outside the United States assume AT*SQA is not for them. It is. The certification is valid in every country where ISTQB is recognized. You get up to 365 days from purchase to schedule and sit the exam. Whether you are in Canada, the UK, Australia, India, or anywhere else, AT*SQA is fully available to you. For a deeper look at what AT*SQA is, read What Is AT*SQA.
| Name | What it does | Why you care |
|---|---|---|
| ISTQB | The global framework behind the certification. | This is the name employers recognize first. |
| ASTQB | The official U.S. board inside the ISTQB system. | This is the U.S. route behind the official American English exam. |
| AT*SQA | ASTQB's global exam provider. | This is where candidates from many countries actually buy and take the exam. |
ISTQB sits at the top. It owns the certification standard and the exam content worldwide. National member boards like ASTQB operate within the ISTQB system in their respective countries, adapting the exam to local language and supporting local candidates. Exam providers like AT*SQA work with those national boards to actually deliver the exams to candidates. The certification you earn flows upward through all three layers and carries the ISTQB name that employers recognize.
Every accredited ISTQB provider issues the same certification. The difference is in what comes around it. AT*SQA gives you the official ASTQB route, practice exams built to reflect the AT*SQA exam format, a free software testing micro-credential with every purchase, up to 365 days to schedule your exam, and career tools like the Official U.S. List of Certified Testers. Most providers give you a voucher and nothing else. TestingCred makes the same distinction from another angle in Does Your ISTQB Exam Provider Matter?. If you want the buying steps before you decide, use How To Book Your ISTQB Exam.
ISTQB, ASTQB, and AT*SQA are not three things to choose between. ISTQB is the global certification that employers recognize. ASTQB is the U.S. board that operates inside the ISTQB system. AT*SQA is where you actually purchase and take the exam, open to candidates worldwide. Buy through AT*SQA and you get the official ASTQB-backed route with the strongest package around it.
For most people, ISTQB Foundation Level is the right first step. It is the entry point to the entire certification path and the credential employers look for first. If you are new to testing or early in your QA career, Foundation Level is the place to start. From there the path leads to Advanced Level specializations and eventually Expert Level. If you still want the basics covered first, use ISTQB FAQ for First-Timers. But Foundation first.
Buy ISTQB Foundation Level through AT*SQA. You get the official ASTQB-backed route, practice exams matched to the AT*SQA exam format, a free micro-credential, and up to 365 days to sit the exam wherever you are in the world.
If you want to dig deeper into any part of this, these are the most useful next reads depending on where you are in the process.
Common questions about ISTQB, ASTQB, and AT*SQA.
ISTQB is the global certification body that sets the exam content and maintains the certification path. ASTQB is the official U.S. member board inside the ISTQB system. AT*SQA is ASTQB's global exam provider, where candidates from any country can buy and take the exam. They are three different layers of one system, not three competing products.
No. ISTQB is the global certification framework. ASTQB is the official United States member board that operates within it. They are part of the same system, not competitors. The certification you earn through the ASTQB route carries the ISTQB name and is recognized globally.
No. AT*SQA is ASTQB's global exam provider and is open to candidates in every country. The ISTQB certification you earn is valid worldwide and you get up to 365 days from purchase to schedule and sit the exam. Candidates from Canada, the UK, Australia, India, and everywhere else use AT*SQA regularly.
AT*SQA. It is the official ASTQB route, open worldwide, and includes practice exams matched to the AT*SQA exam format, a free micro-credential, up to 365 days to schedule, and career tools like the Official U.S. List. If you are buying once, buy the version that comes with more. If you want the steps laid out, read How To Book Your ISTQB Exam.
ISTQB Foundation Level. It is the standard entry point into the certification path and the credential employers look for first. From there the path leads to Advanced Level specializations and Expert Level, but Foundation is where almost everyone begins.