An information processing system includes a storage storing a first program for providing a function and a second program for executing a process for implementing the function; a storage storing, for each application for executing a sequence of processes, identification information identifying the application and information relating to the sequence of processes, the sequence-related information defining the second program for executing the process included in the sequence of processes; a unit for accepting a request from a device coupled to the system, the request including the identification information and electronic data-related information; and a process executer configured to execute the sequence of processes using electronic data based on the information included in the request, as the first program, which corresponds to the second program defined in the sequence-related information associated with the identification information included in the request, requests the second program to execute the predetermined process.