The increasing risk of infectious disease outbreaks and the growing prevalence of non- communicable diseases, coupled with socioeconomic disparities in healthcare access, present a significant challenge for global public health systems. While many regions excel in basic health indicators, the rising rates of chronic diseases highlight the need for proactive measures. Strengthening primary healthcare services through decentralised governance can address these issues, although implementation poses certain challenges. Empowering local governments with greater responsibilities and funding can be an effective way to improve healthcare, especially in times of health crisis. This policy brief emphasises the importance of collaborative governance, where different levels of government and international agencies unite to improve public health services. It offers strategic pathways for strengthening collaborative governance, encouraging G20 and G7 nations through T20 to establish a global governance framework that supports effective healthcare delivery. This collaborative approach can lead to innovative solutions and better health outcomes for communities worldwide.