An information processing system comprising a plurality of electronic devices each including a processing unit that changes a configuration of a device, in which the processing unit itself is included, and a management device that manages the plurality of electronic devices, wherein the management device includes a collecting unit that collects present configuration information of the information processing system, a storage unit that stores first configuration definition information indicating a present configuration of the information processing system on the basis of the configuration information collected by the collecting unit and second configuration definition information indicating an input-configuration after the change of the information processing system, and a control unit that generates control information on the basis of difference information between the first configuration definition information and the second configuration definition information and transmits the generated control information to the processing unit included in each of the plurality of electronic devices.