The CSTB is the national board of Canada for the ISTQB. Its members are a group of highly experienced specialists in software testing who volunteer their time to the development, maintenance, and promotion of the ISTQB Certified Tester program in Canada. They also represent Canadian interests internationally within the ISTQB. While the CSTB is a non-profit organization, exam and accreditation fees are charged to cover the cost connected with the administration of exams, applications for accreditation, the maintenance of a physical office, exhibits at leading software testing conventions, and the employment of administrative staff.