Shakeup (noun)

1. A significant change or reorganization, especially in an organization or industry.
2. A thorough overhaul or reorganization of a company, government, or other organization.

Origin:

From the verb "shake up" which means "to cause a change in a situation or organization".

Examples:

1. The company's management shakeup was intended to boost sales and streamline operations.
2. The government announced a shakeup of the education system.
3. The shakeup of the company resulted in many employees being laid off.
4. The shakeup of the organization led to a change in leadership.
5. The shakeup was a necessary step in order for the company to stay competitive.