Applying DRBFM Method for CCB operation in large scale project(<Special Issue>PM Innovation)

Abstract

It is necessary to carry out several system correction changes at the renewal time of a large-scale IT system which replaces hardware equipment, OS, and even the service provided because of rapid technical progress in recent years. Moreover, the number of the systems which provide service continuously 24 hours a day, 365 days a year is increasing. As the result, the complexity and the risk of system correction change is growing day by day. CCB, which permits system correction change, has employed the DRBFM method which pays its attention to difference thoroughly from a practical experience. I propose the approach of applying DRBFM effectively.