The Sistema Único de Saúde (SUS) is Brazil's public health system, established in 1990. It aims to provide universal access to healthcare for all Brazilian citizens, ensuring that services are free at the point of use. The system is funded by the government and covers a wide range of services, including preventive care, hospital treatment, and specialized services. SUS operates on the principles of equity, universality, and integrality, meaning that everyone has the right to health services regardless of their socioeconomic status. It also emphasizes community participation and the importance of local health initiatives to address specific health needs in different regions.