Abstract
Rich experienced project managers take similar action pattern for preventing or solving project problem. By learning those action patterns as know-how of project management, little experienced managers get to prevent or solve project problems like rich experienced managers. NTT DATA CORPORATION has been developing action patterns of managers and engineers with rich experience in IT infrastructure. These patterns have been widely used in NTT DATA group companies and have reduced project risk. In this paper, we introduce how to develop patterns for sharing the know-how of experienced managers and a case of IT infrastructure 'Anti-Pattern' developed with that method in NTT DATA CORPORATION, and discuss the effect.