A client terminal and a server system having a plurality of processing units processing game applications are connected to each other via a network. In a game system as a cloud computing system, the server system makes the client terminal wait for a start of processing of an application when there is no processing unit assignable to the client terminal. When the processing unit becomes assignable, the client terminal displays a screen inquiring whether to start the processing of the application. When a user does not respond for a predetermined time, the server system cancels the waiting state of the user.