ISTQB stands for International Software Testing Qualifications Board
ISTQB is the abbreviation for International Software Testing Qualifications Board. The International Software Testing Qualifications Board developed the certification for an ISTQB Certified Tester.
The ISTQB Certified Tester is an internationally recognised and standardised education and training scheme for software testers. The scheme consists of three education levels: Foundation Level, Advanced Level and Expert Level. ISTQB has awarded more than 300,000 certifications as the creator of the successful worldwide Software Tester certification method. The ISTQB Certified Tester is a uniform global program that is currently seen as standard in the field of software testing. Hundreds of experts from 48 countries are constantly working on optimising the program. Thanks to their close cooperation they can ensure international comparability and relevance.
The ISTQB program is a worldwide uniform standard for software testers
A bit of background: too little software testing or insufficiently qualified testers are common reasons for poor software quality. In practice, the regular application of systematic testing techniques are still not standard. The ISTQB Certified Tester programs aims to change this. All important topics in the field of testing are explained and practiced in the program.
You can find more information on ISTQB on Wikipedia: https://en.wikipedia.org/wiki/International_Software_Testing_Qualifications_Board