According to various embodiments of the present invention, a server may comprise: a communication circuit; and a processor electrically connected to the communication circuit, wherein the processor is configured to: receive image data of a first camera, selected as a main camera, among image data captured by multiple cameras through the communication circuit; transmit the received image data of the first camera to a real-time broadcast server through the communication circuit; and when a second camera among the multiple cameras satisfies a predesignated selection condition of a main camera, transmit image data of the second camera to the real-time broadcast server through the communication circuit. In addition, various other embodiments are possible.