An information processing system includes a storage storing flow information in association with application identification information, for each application for executing a sequence of processes, the flow information defining program identification information and an execution order of the programs; a storage storing screen information in association with the application identification information for each application; a transmitter for sending, to a device, the screen information associated with the application identification information, when a first request including the application identification information is received from the device; a receiver for receiving a second request including information relating to the electronic data specified by a user in the screen displayed on the first device; an acquirer for acquiring the flow information associated with the application identification information; and an executor for executing the programs identified by the program identification information, in the execution order, to execute the sequence of processes.