A method of providing information for a user in an integrated presentation system. The method includes, based on receiving user identification information, controlling to output a list including one or more users matching the first identification information in a graphical user interface (GUI), receiving a selection of a first user from among the one or more user in the list output on the GUI, sending a plurality of parameters to a server, the plurality of parameters including first information corresponding to a first application, second information corresponding to a second application, and third information corresponding to one or more identifying parameters of the selected first user, receiving first data associated with the first user from the first application and second data associated with the first user from the second application and controlling to output the first data and the second data in the GUI in an integrated manner.