Abstract
It remains important for a development organization to realize high quality software development, but there are few organizations which have achieved it. This paper discusses a method of software development management so-called “Software Quality Accounting” that was originated by NEC Corporation to solve software quality problems. And we explain an actual improvement case that we could decrease the number of post-release defects by improving of previous applications of the Software Quality Accounting. Based on the improvement case, we show that strict application of the Software Quality Accounting and overall software process improvement are required to realize high quality software development.