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Change control within quality management systems (QMS) and information technology (IT) systems is a formal process used to ensure that changes to a product or system are introduced in a controlled and coordinated manner. It reduces the possibility that unnecessary changes will be introduced to a system without forethought, introducing faults into the system or undoing changes made by other users of software. The goals of a change control procedure usually include minimal disruption to services, reduction in back-out activities, and cost-effective utilization of resources involved in implementing change. Change control is currently used in a of products and systems. For IT systems it is a major aspect of the broader discipline of change management. Typical examples from the computer and network environments are patches to software products, installation of new operating systems, upgrades to network routing tables, or changes to the electrical power systems supporting such infrastructure. Certain portions of the Information Technology Infrastructure Library cover change control. == The process == There is considerable overlap and confusion between change management, configuration management and change control. The definition below is not yet integrated with definitions of the others. Certain experts describe change control as a set of six steps: # Record / Classify # Assess # Plan # Build / Test # Implement # Close / Gain Acceptance 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Change control」の詳細全文を読む スポンサード リンク
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