Cloud computing system and traffic distributing and control method in cloud computing system

PURPOSE: A cloud computing system, traffic distribution method, and control method are provided to distribute traffic to local data centers by dynamically constructing service providing environment. CONSTITUTION: In case defined reference traffic is over the defined traffic packets flowed from a second area, a first local data center requests for distributing traffic to a second local data center to a control center(S205,S206). The control center directs preparations for processing the packets which are flowed to the first local data center to the second local data center. When the preparation of the second local data center is completed, the control center directs that the traffic is distributed to the second local data center to the first local data center(S207,S208).