Background Have business activity of your enterprise suddenly disturbed caused by IT problem? And the internal didn't know what causing it. Everyone become busy to check their own job and sometimes pointing fingers to others is the best solutions to save their own seat. That's the reality. To find the root cause of the problem is one thing, but to recover the system from disturbance is the mandatory. Usually when the system already recover, finding the root cause might be forgotten by the internal because they return to their daily activities. Or might be the root cause become another long list mystery to be unsolved. Why it can be happen? because there's no change management properly applied in the enterprise. They can't track every changes that might affect to the enterprise.