ICDL is one of the world's leading computer skills certification. To date, more than 14 million people have engaged with the ICDL programme in over 150 countries, through our network of over 24,000 ICDL Accredited Test Centres (ATCs). The ICDL programme defines the skills and competencies necessary to use a computer and common computer applications. It offers a wide range of modules including computer essentials, word processing, and IT security. Candidates take tests in the modules which are most relevant to their educational and professional requirements, thereby creating their ICDL profile.