CCM uses four dimensions to describe different Cloud formations.
The model is a useful tool for categorizing Cloud services and, more importantly, in my opinion, for highlighting certain features of Cloud Computing models.
For example, a traditional Private Cloud could be viewed as in-sourced, internal, proprietary and perimeterised. However, a Private Cloud could also be outsourced, external, proprietary and perimeterised, if that Cloud service was to be hosted on the Cloud provider’s premises, but still dedicated to a single consumer. In this case, there is very little difference between an outsourced Private Cloud and a traditional outsourcing model.
So this conceptual model helps to understand consumers requirement.
my 2 cents
Chandra Mouli, CISSP, CCSP