imbus Canada Corp.

imbus Canada is the ISTQB® accredited training provider whose training materials have been accredited to support the ISTQB® syllabus with our proven trainers and training materials. All imbus test experts are ISTQB® Certified Testers. Please visit for details.


RBCS IncRBCS’ mission is to help organizations improve their software testing processes by reducing risk and increasing quality in the areas that matter most.

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ISTQB has created the world’s most successful scheme for certifying software testers. The scheme relies on a Body of Knowledge (Syllabi and Glossary) and exam rules that are applied consistently all over the world, with exams and supporting material being available in many languages. Please visit for details.


Our Trainers

Our trainers are experts in the field of software testing and they strive to raise the standards of QA professionalism by training and consulting. All our experts are ISTQB® certified and served as a member of the ISTQB® committees.

Rex Black
Rex Black

Rex Black, past President of the International Software Testing Qualifications Board (ISTQB), past President of the American Software Testing Qualifications Board (ASTQB), Project Manager and Technical Editor for ISTQB Foundation Syllabus 2018, Chair of the Agile Working Group, and co-author of over ten other ISTQB syllabi.


Sammy Kolluru
Sammy Kolluru

 Sammy Kolluru, President of imbus Canada Corporation and Principal Consultant, specializing in agile project management and test process improvement. Over a decade of rich experience in agile software testing and quality assurance. Trainer for ISTQB® Certified Tester syllabus and Certified Agile Tester. Past Board Director of the Canadian Software Testing Board and was a member of the ISTQB® agile working group.