Over 30 world leaders, 50 ministers and 50 international organizations engaged with scientists, the private sector and civil society representatives, young professionals and over 18,500 registered participants during the Climate Adaptation Summit. In 12 different sessions they joined forces to share knowledge, take action and shifting gear in the agenda for a climate-proof future in 2030. 300 speakers shared their insights and plans, while partners from all over the world contributed to CAS 2021 with 160 side events. During the 24 hours that CAS 2021 lasted, the Adaptation Action Agenda took shape, giving direction to an accelerated approach to climate adaptation over the next 10 years.