To provide an Internet computing service system for each customer for utilizing a WWW service and performing a required computer processing service by a system server provided with individual programs corresponding to the job type, job, organization and the number of employees, etc., of each customer in response to the job contents, scale and processing request of the customer.

This Internet computing service system for each customer is constituted of a computing service system provided with the system server loaded with intrinsic application software, corresponding to demands from the respective customers and provided with a required data storage function for performing a series of processings, such as computation, analysis and storage of data inputted from customer side terminals and outputting a required processing result at appropriate time to the customer side terminals and a customer side terminal group connectable to the system server at desired time via the browser of the WWW service. Corresponding to the requests from the respective customer side terminals, the computing processing services regarding accounting processing, financial processing, order reception processing, sales management processing, inventory management processing and business analysis, etc., are provided.