Abstract
We believe that quality of product realization process depends on "QMS (quality management system) level" and "performing level (projects' daily practices based on QMS)". Therefore, we have developed "Quality Management System Evaluation Method" that can evaluate both QMS level and performing level. In this paper, we describe the comparison analysis of evaluation results in different business domains (hardware products and software products) in Hitachi Group, which are obtained by applying this method to 72 product-development projects in 9 business units. The consequences of this comparison analysis are follows: (1) Individual business units have some specific and advanced "best practices" in QMS, (2) These "best practices" could be effective for other business units. (3) The excellent performing levels are found in a few specific projects, and (4) Using this method, both average and variance of performing levels can be described quantitatively.