With a quarter-century of software and systems engineering experience, Rex Black is President of RBCS (www.rbcs-us.com), a leader in software, hardware, C systems testing. For over a dozen years, RBCS has delivered services in consulting, outsourcing, and training for software & hardware testing. Employing the industry's most experienced & recognized consultants, RBCS conducts product testing; builds & improves testing groups; and hires testing staff for hundreds of clients worldwide. As the leader of RBCS, Rex is the most prolific author practicing in the field of software testing today. His popular first book, Managing the Testing Process, has sold over 30,000 copies around the world, including Japanese, Chinese, and Indian releases. His three other books on testing, Critical Testing Processes, Foundations of Software Testing, and Pragmatic Software Testing, have also sold tens of thousands of copies, including Hebrew, Indian, Chinese, Japanese and Russian editions. He has written over twenty-five articles, presented hundreds of papers, workshops, and seminars, and given about 30 keynote speeches at conferences around the world. Rex is the President of both the ISTQB and the ASTQB.