The document is titled Supporting Integrated Infant and Young Child Nutrition and Early Childhood Development Programming and is a reference package developed by USAID Advancing Nutrition. The package aims to help program managers design and implement more holistic and integrated programming to support the health and development of children from birth to two years of age. It provides guidance on integrating nutrition services and responsive caregiving interventions during the first 1,000 days, a critical period for child development. The package includes a program design and implementation guide, key terms, acronyms and abbreviations, and modules for different age stages (birth to 6 months, 6 to 9 months, 9 to 12 months, and 12 to 24 months).