Provided is a method of determining an advertisement target according to an advertisement request, the method includes: obtaining usage history information from a plurality of devices, obtaining features of the plurality of devices, based on the usage history information, and generating feature vectors for the obtained features; determining labels for the plurality of devices, based on the advertisement request and the obtained features; generating an advertisement target inference model, based on the determined labels and the feature vectors; and determining at least one advertisement target device among the plurality of devices by applying the generated advertisement target inference model to the plurality of devices.