A service providing system includes input/output devices, a service providing device configured to provide services by driving the input/output devices, and a preparation device, in response to receipt of a provision command for a service, configured to selectively place the input/output devices, for providing the service, which are in a non-standby state, into a standby state. In a multi-function device system including input/output devices, a method of providing a service includes receiving a provision command for a service, and selectively placing the input/output devices for providing theservice into a standby state in response to the provision command.