The present disclosure relates to a cloud server, comprising a communication unit transmitting and receiving data to and from at least one robot and an external device; and a control unit which receives a first signal including operating system information of a first robot, hardware information of the first robot, and software information of the first robot from a first robot among the at least one robot; if no software image corresponding to the first signal is present, extracts the operating system information of the first robot, the hardware information of the first robot, and the software information of the first robot from the first signal; generates a software image based on the extracted operating system information of the first robot, the extracted hardware information of the first robot, and the extracted software information of the first robot; and transmits the generated software image to the first robot.