Abstract
Technologies are able to improve by learning from past projects. The author tried to analyze 48 past data of IT system development projects and improve management techniques. According to the result of analysis, it was found out there were some different tendencies between achieved projects and unachieved projects to the quality target after shipment. Unachieved projects become an unachieved project via sort of a typical development story. The development tendency of unachieved projects is called "unachieving story". The risks that projects become unachieved projects can be minimized by detecting unachieving signs earlier in the development process based on the unachieving story. This paper proposes risk management techniques should be frequently reconsidered based on the actual result of data analysis.
