shakeup

/ˈʃeɪkˌʌp/
noun
  1. A major reorganization or restructuring of a company, organization, or government department, often involving changes in staff or policies.
    • The school district underwent a shakeup to improve student performance.
    • The new CEO announced a complete shakeup of the marketing department.
    • After the scandal, the board called for a shakeup in management.
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