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Most of these organizations failed. It is not easy to write a
model. It takes a long time and it costs a lot of money. And remember, the models
are summaries of the best practices of effective, successful organizations. So, it
would behoove someone to follow most of the practices documented in these models.
Most models allow an organization to substitute alternative practices for those
practices in the chosen model that do not fit the organization. But beware??”the
more alternatives you select, the more you deviate from best practices in a model,
the less likely you are of improving the problems in your organization.
A brief overview of some of the more frequently used models follows. Please do
not consider this overview exhaustive, as we simply summarize the basic thrust of
each model. We do not purport to be experts in all of these models. Those of you
who are experts in any of the models may take exception to some of our statements.
These statements are offered once again only as high-level summarizations.
???In the beginning,??? there were ISO and the CMM.


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