bus factor

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English

Etymology

From the phrase “get hit by a bus” as an informal way to describe a person suddenly becoming unavailable.

Noun

bus factor (plural bus factors)

  1. (business, originally software engineering) A measurement of the risk of losing team members, in terms of information and abilities no longer available to the team.
    • 2012, Brian W. Fitzpatrick, Ben Collins-Sussman, Team Geek: A Software Developer's Guide to Working Well with Others, "O'Reilly Media, Inc.", →ISBN, page 7:
      It's also important to strengthen what we call the bus factor of your project. Bus factor (noun): the number of people that need to get hit by a bus before your project is completely doomed. What's your team's bus factor?

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