Capability Maturity Model Integration(CMMI)

Capability Maturity Model Integration (CMMI) is a process improvement approach that provides organizations with the essential elements of effective processes that ultimately improve their performance. CMMI model is a process improvement maturity model for the development of products and services. It consists of best practices that address development and maintenance activities that cover the product lifecycle from conception through delivery and maintenance.

CMMI model can be used to guide process improvement across a project, a division, or an entire organization. It helps integrate traditionally separate organizational functions, set process improvement goals and priorities, provide guidance for quality processes, and provide a point of reference for appraising current processes. It is also links it all to the organization's business objectives and also maintains a focus on meeting customer expectations.



CMMI was developed by a group of experts from industry, government, and the Software Engineering Institute (SEI) at Carnegie Mellon University (CMU), Pittsburgh, USA. CMMI models provide guidance for developing or improving processes that meet the business goals of an organization. A CMMI model may also be used as a framework for appraising the process maturity of the organization.

CMMI is the successor of the Capability Maturity Model (CMM) or Software CMM and the current version of the CMMI is Version 1.2 was released in August 2006.

  • Organization's activities are explicitly linked to your business objectives.
  • Visibility into the organization's activities is increased to help you ensure that your product or service meets the customer's expectations.
  • Learn from new areas of best practice (e.g., measurement, risk).

CMMI is a collection of best practices that meet the needs of organizations in different areas of interest. A collection of best practices that cover a particular area of interest is called a CMMI model.

CMMI Version 1.2 currently addresses three areas of interest:
(1) Product and service development — CMMI Version 1.2 for Development (CMMI V 1.2-DEV),
(2) Service establishment, management, and delivery — CMMI Version 1.2 for Services (CMMI V 1.2 -SVC), and
(3) Product and service acquisition — CMMI Version 1.2 for Acquisition (CMMI V 1.2 -ACQ).

1. CMMI Version 1.2 for Development (CMMI V 1.2 -DEV)
CMMI Version 1.2 for Development addresses the product and service development processes.

2. CMMI Version 1.2 for Acquisition (CMMI V 1.2 -ACQ)
CMMI Version 1.2 for Acquisition addresses the supply chain management, acquisition, and outsourcing processes in government and industry.

3. CMMI Version 1.2 for Services (CMMI V 1.2 -SVC)
CMMI Version 1.2 for Services (CMMI V 1.2 -SVC) addresses guidance for delivering services within an organization and to external customers.

CMMI Representation
CMMI exists in two representations are Staged and Continuous, and these representations are also known as Maturity and Capability levels respectively.

Staged Representation
The staged representation is designed to provide a standard sequence of improvements, and can serve as a basis for comparing the maturity of different projects and organizations. It is offers a systematic, structured way to approach model-based process improvement one stage at a time.

If an organization does not know where to start and which processes to choose to improve, the staged representation is a good choice for the organization.

Staged representation is also known as “Maturity Level”. It has five maturity levels

Five Levels of Maturity
Fig. - Five Levels of Maturity.

The continuous representation is designed to allow the user to focus on the specific processes that are considered important for the organization's immediate business objectives, or those to which the organization assigns a high degree of risk. It is offers maximum flexibility when using a CMMI model for process improvement.

If an organization knows the processes that need to be improved in the organization and organization understand the dependencies among the process areas described in CMMI, the continuous representation is a good choice for the organization.

       Continuous representation is also known as “Capability Level”. It has six capability levels

Level 0 “Incomplete”
Process that either is not performed or partially performed.

Level 1 “Performed”
Performed process is a process that satisfies the specific goals of the process area.

Level 2 “Managed”
Managed process is a performed (capability level 1) process that has the basic infrastructure in place to support the process.

Level 3 “Defined”
Defined process is a managed (capability level 2) process that is tailored from the organization’s set of standard processes according to the organization’s tailoring guidelines, and contributes work products, measures, and other process improvement information to the organizational process assets.

Level 4 “Quantitatively Managed”
Quantitatively managed process is a defined (capability level 3) process that is controlled using statistical and other quantitative techniques.

Level 5 “Optimizing
Optimizing process is a quantitatively managed (capability level 4) process that is improved based on an understanding of the common causes of variation inherent in the process.

The levels of the CMMI Version 1.2 is consisting the “22 Process Area”. The below depiction shows the name of all the 22 processes areas along with levels.

Capability Maturity Model -Integrated



Process Areas




Continuous process improvement


Organization Innovation Deployment
Causal Analysis & Resolution


Quantitatively Managed


Quantitative Management


Organization process performance
Quantitative project management




Process Standardization


Requirement Development
Technical Solution
Product Integration
Organization Process Focus
Organization Process Definition
Organization Training
Integrated Project Management
Risk Management
Decision Analysis & Resolution




Basic project management


Requirement Management
Project Planning
Project Monitoring & Control
Supplier Agreement & Management
Measurement Analysis
Process & Product Quality Assurance
Configuration Management


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