A health system consists of all organizations, institutions, and resources whose primary purpose is to promote, restore or maintain health. A health system needs staff, funds, information, supplies, transport, communications, and overall guidance to provide responsive, financially fair, and decent services. Universal health coverage aims to ensure all people have access to needed health services of sufficient quality without facing financial hardship. Key components of a health system include service delivery, health workforce, health information, access to essential medicines, health care financing, and leadership/governance.