How are product post-mortem reviews different from project post-mortems?
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Projects tend to be one-shot efforts; products are long-lived items with many releases and many customers.
The entire subject of risk management is based on the ability of the manager to identify, value, and then mitigate the correct risks. Classification of risks is a vital step in this process. It is important to realize that there is no standard framework for classifying risks. Different people use different frameworks. One such framework was made popular by Donald Rumsfeld, who was Secretary of Defense for the United States during the subprime mortgage crisis. This framework classifies risks based on knowns and unknowns.