This book, published by the World Health Organization (WHO), focuses on building national workforce capacity to carry out essential public health functions, with an emphasis on emergency preparedness and response. It provides a strategic roadmap for aligning WHO's efforts with various partners, aimed at enhancing public health capabilities globally. The document outlines key competencies and skillsets necessary for public health personnel, and suggests methods for developing and implementing these competencies. The book is intended for policymakers, public health professionals, and organizations involved in public health and emergency response. It serves as a guide for improving public health infrastructure and workforce capacity, especially in the face of emergencies such as pandemics.