|Ernesto Guisado's Website » Miscellanea » Defect severities, part 5 - Handbook of Software Reliability Engineering||Articles | Miscellanea ||
SummaryMichael Lyu’s Handbook of Software Reliability Engineering feels a bit like the “important, very important, extremely important” mind hack, but without the irony:
Classification used in Michael Lyu's book
Not bad actually. Respects the customers feelings of urgency, while reserving the highest severity for a very small subset of failures. In my opinion the “loophole” is Severe: “important customer feature”. This severity will be fudged. An improvement would be to specify who (e.g. customer product management team) or what (marketing brochure) says which feature is important.