A Capability Maturity Model (CMM) lists important activities common to similar organizations and provides rating scales (e.g., 1‐5) for each activity, along with descriptions of what each rating means. A CMM is a way of evaluating how well an organization does what it does. CobiT is an example of a framework that contains a CMM used to rate the activities of Informational Technology divisions across all stages of service design and implementation. The ratings of a CMM may be correlated to other measures of organizational success, such as brand value, profitability, and market growth.
A CMM, when used by external, impartial, third‐party evaluators, helps other interested parties compare multiple organizations. When used internally, a CMM can be used to establish an organizational vision, and organizational and individual goals. This helps set the time‐frame in which an organization may achieve each level of the CMM.
Source: Guide to the Business Process Management Body of Knowledge – ABPMP BPM CBOK V3.0.