Service-Oriented Cloud Workflow Model and Scheduling Method

In the dynamic environment of cloud workflow, response to the workflow request of users and scheduling cloud workflow is a challenge problem.To solve this problem, a service-oriented cloud workflow model is proposed to satisfy the request of users by the computing and storage service.Then on the basis, the cloud workflow scheduling strategy and scheduling algorithm for workflow were proposed.DAG(Directed Acyclic Grapg) was used in the algorithm, and resource strategy was modified to meet the latest execution time under the premise of minimizing the entire workflow execution costs.The experimental results showed that the efficiency effectively improved and the cost was reduced with the proposed algorithm.