Each company must decide what level of change-management process to
have for each point in the machine category/type of change matrix. Systems
critical to the business obviously should be controlled tightly. Changes to a
single desktop may not need such control. Changes to every desktop in the
company probably should. Having enough process and review for changes on
more critical systems will result in fewer, potentially costly, mistakes. The IT
Infrastructure Library (ITIL) is a valuable resource for further reading in the
area of change management and SA processes. ITIL best-practice processes
are becoming widely recognized as standards