A assembly support apparatus for promotion of an information system, includes a memory for storing design information of the information system including information of a plurality of components necessary for the production of the information system; and a processor for generating instructions for procurement of the components in accordance with a process comprising; discriminating the components into those available as inventory items and those that need to be procured from the exterior on the basis of the design information stored in the memory, urging information of persons responsible to procure the component to be inputted in association with those components to be inputted in association with those components to be produced respectively, and generating instructions directed to the responsible persons for procurement of those components to be procured from the exterior respectively.