Abstract
To succeed, IT projects require deep involvement of the business sector. Failure in meeting terms, such as those regarding participation and low degree of project participation, results in system failure, cost overruns, and delays in the project schedule related to quality, cost, and delivery (QCD) time. These are however, not likely to actually lead to a project being abandoned. The Tokio Marine Group introduced the Application Ownership System, in 2000 as a measure to resolve such issues, while conducting repeated trial-and-error experiments over the years to promote the deepening and the fixing of this system, and it has now successfully implemented this system developed in collaboration by business and IT throughout the Group. In this paper, we report a case study of the Application Ownership System, and describe the technique of "owner man-month" devised for fixing the system. Through the knowledge gained from the trial and error experiments, we consider four success factors.
