GEONETCast is a milestone in the Global Earth Observation System of Systems (GEOSS), coordinated by the intergovernmental Group on Earth Observation (GEO). It is designed to put a vast range of essential environmental data at the fingertips of users around the globe. This user-driven, user-friendly, and low-cost information dissemination service aims to provide global information as a basis for sound decision-making in a number of critical areas. Accessing and sharing such a range of vital data will yield societal benefits through improved human health and well-being; environment management, and economic growth. Within the existing framework, GEONETCast is already partially realising this goal with environmental data exchange and data delivery available in Europe, Africa and the Americas. An additional data exchange is now being established covering the Asia Pacific region.