Cancer is a leading cause of death worldwide. According to the World Health Organization (WHO), cancer deaths worldwide are projected to continue to rise to more than 11 million in 2030. The American Cancer Society estimates that in 2018, 1.7 million new cases of cancer will be diagnosed. Nearly two-thirds of these patients will receive radiation therapy during their illness – most with the intent to cure the cancer. Advances in the applications, technologies and methodologies of radiation oncology continue to evolve rapidly and the delivery of radiation therapy has become more complex, making it imperative that the radiation oncology professional remain current in the state-of-the-art techniques. ASTRO is committed to providing educational programming that creates a forum for global collaboration on issues in radiation oncology to improve professional practice by increasing their level of knowledge, as required to improve competency and performance in the field of oncology.