The Certified Tester Foundation Level (CTFL) in Software Testing is a certification offered by the International Software Testing Qualifications Board (ISTQB). The CTFL certification is a prerequisite for many more advanced ISTQB certifications.

The CTFL certification is designed to provide a common language and knowledge of software testing concepts among professionals working in the industry.

It is a globally recognized certification that validates a tester's knowledge and understanding of the fundamental concepts and practices of software testing.

Holding the CTFL certification demonstrates to employers and colleagues that the individual understands software testing principles, methods, and techniques. It can also help to improve one's career prospects and earning potential.