Page 1409 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide

Software Engineering Institute’s website at www.sei.cmu.edu.

IDEAL Model

The Software Engineering Institute also developed the IDEAL model
for software development, which implements many of the SW-CMM

attributes. The IDEAL model has five phases:

I: Initiating In the initiating phase of the IDEAL model, the business
reasons behind the change are outlined, support is built for the
initiative, and the appropriate infrastructure is put in place.

2: Diagnosing During the diagnosing phase, engineers analyze the
current state of the organization and make general recommendations

for change.

3: Establishing In the establishing phase, the organization takes the
general recommendations from the diagnosing phase and develops a
specific plan of action that helps achieve those changes.

4: Acting In the acting phase, it’s time to stop “talking the talk” and
“walk the walk.” The organization develops solutions and then tests,
refines, and implements them.

5: Learning As with any quality improvement process, the

organization must continuously analyze its efforts to determine
whether it has achieved the desired goals and, when necessary,
propose new actions to put the organization back on course.

The IDEAL model is illustrated in Figure 20.4.