Welcome to our third Global Health Security conference, which returns to Sydney, Australia, in June 2024! Even as the COVID-19 pandemic remains ongoing, the health challenges people confront from a changing climate, zoonotic pathogens, microbial resistance, conflict, and the social, political and economic determinants of health that exacerbate poor health, exposure to disease, and an inability to access affordable healthcare services, can seem insurmountable at times. Yet by working collaboratively to bring multiple stakeholders from across disciplines and professions where we can share learnings, research, policy innovations and solutions, we can build a safer and healthier world for all. Join us in Sydney to be part of this important dialogue!