According to one embodiment of the present invention, a server comprises at least one communication interface, at least one processor operatively connected to the communication interface, and at least one memory operatively connected to the processor, wherein the memory store instructions configured to, when executed, cause the processor: receives, from a first electronic device, first input voice data including a first request for conducting a first task by using a second electronic device by user's utterance; determines or receives a state of the first electronic device; and provides a first external electronic device with a first response related to control of the state of the first electronic device. Various other embodiments are possible.