Abstract
We are deploying software development processes across our company with CMMI-based improvements. Although the processes conformed to CMMI Maturity Level 3 are penetrated into the whole company, we could not exterminate overrun projects. Major factors of the overruns were found to be in upstream software development processes, such as proposal, estimation, and contract. Focusing on the estimation process, we developed and deployed our new standard estimation model and its application guide with practical know-how and industry-wide technologies being integrated to improve the accuracy of estimations. In this paper, we discuss the points taken into consideration when we developed these standards.
