Excerpt: “WMO is proud to announce a milestone in international meteorological cooperation – with the operational phase of the WMO Information System 2.0 (WIS 2.0) which will help change the way nations share Earth system data. WIS 2.0 exemplifies what we can achieve through global collaboration and marks a great start to the 75th anniversary of WMO as a specialized United Nations agency. WIS 2.0 is the framework for WMO data sharing in the 21st century and makes international, regional, and national data sharing simple, effective, and inexpensive. It is based on the principle that no WMO Member should be left behind. It became operational on 1 January 2025. Real-time data sharing underpins the accuracy of weather forecasts and enhances global cooperation, but also supports vital early warning systems, aids climate research, delivers significant economic and safety benefits, and enables Earth system monitoring.”