The modern poultry industry faces the constant challenge of maximising production without compromising animal health or welfare. The 10th Revised Edition on the nutrient requirements of poultry, presented at the Informal Nutrition Symposium, represents the most up-to-date and comprehensive international reference for managing optimal diets in broilers, laying hens, turkeys and other domestic poultry. This article summarises the fundamental aspects of the symposium and the main updates on nutritional requirements.