Meeting users’ Quality of Service (QoS) requirements is a key problem of tasks scheduling in cloud computing. A cloud tasks scheduling algorithm CTS_QoS based on maximal QoS satisfaction and minimal QoS distance between tasks and resources is presented in this paper. Under meeting maximal QoS satisfaction of user’s tasks, CTS_QoS can select the resources with minimal QoS distance to map. Experimental results show that though CTS_QoS cannot guarantee a high resource utiliz...