The European Society of Medical Oncology (ESMO) is a professional organization dedicated to advancing the field of medical oncology in Europe and beyond. Founded in 1975, ESMO aims to improve cancer care through education, research, and collaboration among healthcare professionals. It provides resources, guidelines, and training to enhance the skills of oncologists and improve patient outcomes. ESMO organizes annual congresses and educational events, bringing together experts to share the latest research and treatment strategies. The society also publishes the Annals of Oncology, a leading journal that disseminates important findings in cancer research. Through these efforts, ESMO plays a crucial role in shaping oncology practices across Europe.