How do repeatable OGC Gateway Reviews 4 and 5 work?
OGC Gateway Review 4 occurs when a product/system/building is implemented in phases. OGC Gateway Review 5 occurs when the benefits are realised over a long period of time. Repeated OGC Gateway Reviews 5 can also be used to check for continuing need for the service, continuing and improving value for money, and continuing robust contract management arrangements.