Definition of mission-critical in English:

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mission-critical

Pronunciation:

adjective

Computing
(Of hardware or software) vital to the functioning of an organization.
Example sentences
  • This is an important consideration if you are thinking about buying mission-critical software from outside your country.
  • Long after the marketing campaign is done, we will still be fanatical about providing the most secure mission-critical software in the business.
  • Less than half of the companies surveyed have formal procedures in place for backing up mission-critical data hosted on laptop computers.
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