Abstract: In order to improve the work efficiency of supply chain in cloud computing and avoid the risks of cloud computing, a cloud-based supply chain information coordination model was proposed. The model has two basic states which are online status and offline status, at online state the cloud computing center is responsible for coordination of the entire supply chain information, and at offline state each node continues to complete the transaction order through the history record and each node information in the cloud data center. Simulation based on Multi-agent shows that the order completion rate in offline status is slightly lower than that in online status, and can meet the users' regular requirements in cloud computing supply chain. Experimental results confirm that the model is feasible, and the offline status can effectively avoid the risk in the cloud computing environment.

Key words: supply chain, collaboration model, cloud computing, risk avoidance, multi-agent system, online/offline status, order completion rate, negotiation strategy