Changeover (noun)

1. The process or act of changing from one system, state, or condition to another.
2. The time or period during which the change takes place.

Origin:

Unknown.

Examples:

1. The changeover from the old software system to the new one was completed without any major problems.
2. The changeover period was a time of great uncertainty for the employees, as they had to learn new procedures and processes.
3. The changeover was necessary because the old system was outdated and no longer able to meet the needs of the business.
4. The changeover was handled smoothly thanks to the careful planning and coordination of the IT team.
5. The changeover was a challenging but exciting time, as it signaled the start of a new era for the company.