onstructed by CNIC team, CSTCloud AAI (China Science and Technology Cloud Authentication and Authorization Infrastructure) is a progressive system. It facilitates CAS researchers to access internal and external resources and services.

A cloud federated testbed spanning China, Europe, and Africa has been carried out and achieved steady progress. The China-EU-Africa internet connectivity has been enhanced based on the close collaboration between CNIC and GEANT.

The Beijing session meeting for the Global Open Science Cloud (GOSC) Initiative Working Group (WG) and Case Studies (CS) was held at Computer Network Information Center (CNIC) of Chinese Academy of Sciences (CAS) on December 14, 2021. As an annual review

From November 9 to 11, "CSTCloud Technical Training Workshop 2020” was successfully held in Beijing. More than 200 representatives Mainly from Chinese Academy of Sciences and other research institutions attended the training onsite or virtually.