Staged Model - It uses predefined sets of process area to define an improvement.Each level of maturity is further decomposed into number of processes that are fixed to that level of maturity. It has 5 maturity levels - Initial, Managed, Defined, Quantitatively managed and Optimizing.

Continuous Model - In this model processes are individually improved along a capability scale independent of each other.It provides flexibility for organizations to choose which processes to emphasize for improvement . It has 6 capability levels - Incomplete, Performed, Managed, Defined, Quantitatively managed and Optimizing.

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