Configuration Management (CM) describes a series of processes and procedures developed in the information technology community to establish and maintain system integrity. It is an integral part of the systems engineering process. While some of the terms used in CM may be unfamiliar to transportation professionals, the core concepts and practices of CM are not technically complex. Rather, they represent sound practices in developing and maintaining any system. As you will see in this document, CM makes sense for use in transportation management systems (TMSs). The purpose of this primer is to identify for a non-technical audience the key aspects, identify issues for their agencies to consider, identify the benefits or value, profile successful practices, describe why and identify opportunities how agencies may benefit from and why they should consider or using various configuration management procedures, techniques, tools, or requirements into their policies, programs, and day-to-day activities.