The public sector refers to the part of the economy that is controlled and operated by government entities at local, regional, or national levels. This includes organizations and agencies such as police departments, public schools, hospitals, government ministries, and correctional facilities. The public sector is responsible for providing essential services, enforcing laws, and managing public resources for the benefit of society. Unlike the private sector, which is driven by profit, the public sector focuses on serving the public interest and ensuring the welfare and security of citizens.