Abstract
NTT DATA group has held an event aiming to improve its estimation capability and to boost a mood of importance of estimation. The event which is named Estimation Grand Prix, M1-GP in short to evoke a festival mood, collects various success cases of estimation from the group wide. In this event, the executive committee creates a challenge and invites the employees to enter the prize contest for the best estimation. and then by examining the estimations of the entries, the judging committee makes a public recognition of prize winner's superior practices. The practices are shared in the group as the best practices by being presented in a forum by award winners. and the knowhow of the practices is also shared by including it into the standard and training texts. the Grand Prix is held an annual event and this year was its third time. In this article we report the outline of the third event and knowhow we earned.