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Answer Posted / obi okoli
Farrukh Shahid is right in his definition stating
that "Capability Maturity Model Integration (CMMI) is a
model that
consists of best practices for system and software
development and maintenance. It was developed by the
Software Engineering Institute (SEI) at Carnegie-Mellon
University. The CMMI model provides guidance to use when
developing system and software processes. The model may also
be used as a framework for appraising the process maturity
of the organization. CMMI is a successor to the Software
Capability Maturity Model".
However, the different level accepted by SEI are as follows:
Level 1 - Initial (Chaotic)
It is characteristic of processes at this level that they
are (typically) undocumented and in a state of dynamic
change, tending to be driven in an ad hoc, uncontrolled and
reactive manner by users or events. This provides a chaotic
or unstable environment for the processes.
Level 2 - Repeatable
It is characteristic of processes at this level that some
processes are repeatable, possibly with consistent results.
Process discipline is unlikely to be rigorous, but where it
exists it may help to ensure that existing processes are
maintained during times of stress.
Level 3 - Defined
It is characteristic of processes at this level that there
are sets of defined and documented standard processes
established and subject to some degree of improvement over
time. These standard processes are in place (i.e., they are
the AS-IS processes) and used to establish consistency of
process performance across the organization.
Level 4 - Managed
It is characteristic of processes at this level that, using
process metrics, management can effectively control the AS-
IS process (e.g., for software development ). In
particular, management can identify ways to adjust and
adapt the process to particular projects without measurable
losses of quality or deviations from specifications.
Process Capability is established from this level.
Level 5 - Optimized
It is a characteristic of processes at this level that the
focus is on continually improving process performance
through both incremental and innovative technological
changes/improvements.
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