Fuente: Wipo "IOT" An Internet-of-Things (IoT) server includes a storage configured to store function information of a plurality of IoT devices. The stored function information of the plurality of IoT devices are classified based on IoT functions to be implemented in an IoT environment. The IoT server further includes a controller configured to generate a second command to control a target device among the pluralityof IoT devices to execute at least one IoT function of the IoT functions, in response to a first command from an IoT application. The first command is converted into a format executable in the targetdevice and transmitted to the target device as the second command.