Change management not only encompasses technological installations (upgrades, patching, and migrations) but also field engineering installation changes.
Change management can be a complex road littered with potholes. The irony of working in system or network administration is that you’re there to maintain the status quo and yet careful change management is also your job. Effective delivery of services and resources demands that you maintain the best possible up-time while transitioning from old to new, whether replacing technology or simply improving upon it.