Neonatal Intensive Care Units (NICUs) play a critical role in improving survival and health outcomes among newborns requiring specialized medical care. Advances in neonatal medicine, respiratory support technologies, nutritional management, infection control, and developmental care have significantly reduced neonatal mortality and improved survival rates among premature and critically ill infants. Despite remarkable progress, challenges remain regarding long-term neurodevelopmental outcomes, healthcare disparities, resource limitations, and the increasing complexity of neonatal care. This review examines the evolution of neonatal intensive care, determinants of neonatal survival, major clinical interventions, outcomes among high-risk neonates, and future directions in neonatal medicine. The study highlights the importance of multidisciplinary care, evidence-based interventions, family-centered approaches, and emerging technologies such as artificial intelligence and tele-neonatology. Findings suggest that continued innovation, equitable healthcare access, and comprehensive follow-up programs are essential for optimizing neonatal survival and long-term quality of life.