drastic change; major turnaround; sea change
Refers to a fundamental, large-scale shift in direction, policy, or situation. Often used in business, politics, or social contexts.
会社は経営方針の大転換を発表した。
The company announced a major turnaround in its management policy.
デジタル化は業界に大転換をもたらした。
Digitalization brought about a sea change in the industry.