The International Software Testing Qualifications Board (ISTQB) is a software testing certification board founded in Edinburgh in November 2002 and operates internationally. It was established to provide quality certificates that recognize the skills, knowledge, and experience of Testers. The certification covers various aspects of software testing, including test management, test design, and test analysis, and has three levels: foundation, advanced, and expert. The ISTQB Certified Tester credential, one of the world's largest and oldest universal professional certification programs, has become a standard for evaluation. This credential enhances the professional reputation of software testing engineers and facilitates organizations in validating the owner's competence and knowledge in software testing.