An information processing apparatus receives index information about an expansion function realized by being linked to a predetermined service provided by an external apparatus from a server apparatus connected via a network, displays a menu of information representing the expansion functions on a display screen, based on the index information, downloads software for executing the expansion function based on location information of the software when the expansion function being executed in accordance with a user selection on the menu on the display screen; the location information contained in the index information, and uses the downloaded software to executes the expansion function selected by an user.