Teams usually close an incident with a postmortem, corrective actions, and tickets. The problem is that the knowledge frequently remains separated from the point where the next code change will be written. Google SRE points out that postmortems are useful for preventing repeated incidents when they generate concrete and trackable preventive actions; it also warns that action items without follow-up can be forgotten and that changing automated systems is usually more reliable than relying solely on changing human behavior.
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