A server device includes an external device information managing unit which manages external device information regarding plural external devices, and an association process flow determining unit which determines an association process flow that defines how plural processes in image processing are performed on image data by the external devices, based on the external device information. The association process flow determining unit is configured to determine plural association process flows for the image processing, and the determined association process flows include first and second association process flows such that first external devices defined in the first association process flow differ from second external devices defined in the second association process flow.