ASIA-OCEANIA GEOSS(AOGEOSS) Initiative is regional cooperation program on earth observation with broad involvement to meet GEO strategic overall objectives. It aims to strengthen comprehensive ability of Earth observation and applications for jointly proposed by the Asia Oceania Caucus members (Australia, China, Japan, etc.) and open to all member states of the United Nation in the Asia Oceania region as well as Participating organizations of GEO. The AOGEOSS initiative will engage participants and stakeholders in Asia-Oceania region, and coordinate the observation infrastructure, leveraging the existing cooperation and conducting joint projects under the AO Caucus mechanism of intergovernmental GEO. Priorities will be regional application and services in accordance with regional sustainable issues with increasing concern, including Monitoring and evaluation of drought in Asia-Oceana region, Environmental Monitoring and Assessment, Ocean and Island monitoring, and Himalayan GEOSS. Meanwhile, it will also foster the existing activities such as Asia-Pacific Biodiversity Observation Network (AP-BON), Asia Rice Crop Estimation and monitoring (Asia-RICE), Asian Water Cycle Initiative (AWCI), Ocean and Society, GEO Carbon and GHG Initiative. The initiative will also implement data sharing, AO-DataCube and user engagement and communication as Foundational tasks.