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(I) what are different models in CMMI?

 

(I) Can you explain staged and continuous models in CMMI?

There are two aspects in CMMI one is the capability and other is the maturity. Capability means the ability to perform task while maturity means to perform task in a matured fashion. Both the CMMI models lie in of the above category. There are two models in CMMI first is “staged” in which maturity level organizes the process areas, second is “continuous” in which the capability level organize the process area.

Figure: - CMMI models

Below figure shows how process areas are grouped in both models.

Figure: - Staged and continuous models

Let’s try to understand both the models in a more detail manner. Before we move ahead deeper in differences of the two models lets understand the basic structure of CMMI process, goal and practices. A process area as said previously is a group of practices or activities performed to achieve specific objective. Every process area has specific as well as generic goal that should be satisfied to achieve that objective. To achieve those goals we need to follow certain practices. So again to achieve those specific goals we have specific practices and to achieve generic goals we have generic practices.

In one of our previous questions we talked about implementation and Institutionalization. Implementation can be related to specific practice while Institutionalization can be related to generics practices. So this is what the common basic structure in both models Process area à Specific / Generic goals à Specific / Generic practice.

Now let’s try to understand model structures with both types of representations. In staged representation we revolve around maturity level as shown in figure below. So all process have to be at one maturity level.

Figure: - Staged representation

While in continuous representation we try to achieve capability levels in those practices. Below diagram shows how continuous representation revolves around capability. Continuous representation is used when the organization wants to mature and perform in one specific process area only. Let’s say for instance in a non-it organization one wants to only improve its supplier agreement process. So that particular organization will only concentrate on SAM and try to achieve good capability level in that process area.

Figure: - Continuous representation

If you want to buy the project management book mail [email protected]  for more details or call any of our book shops MUMBAI-22078296/97/022-22070989, KOLKATA-22826518/19 HYDERABAD-24756967,24756400,BANGALORE-25587923, 25584641,AHMEDABAD-26421611,BHATINA(PUNJAB)-2237387,CHENNAI-28410796,28550491,DELHI/NEWDELHI-23254990/91,23325760,26415092,24691288.If you want to write to the author directly email at [email protected]
 

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