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1. The time frame during which a changeover or conversion occurs, allowing for adaptation, training, and adjustment to the new system.
2. Where the old system is replaced abruptly with the new system, often with minimal or no overlap in operation.
3. The actions taken to reduce or eliminate risks and their impact during the implementation or execution of a project or system.
4. An approach to system implementation where different modules or components are introduced gradually until the entire system is fully operational.
5. Where new and old systems run simultaneously for a period of time to ensure smooth transition and mitigate risks.
6. The process of putting a new computerized system into use, involving installation, configuration, and testing to ensure its functionality and efficiency.
7. The time where both the old and new systems are active, allowing for parallel running or testing before a complete changeover takes place.