What method of introducing change is defined as completely replacing old processes and IT with new ones?

The method of introducing change that involves completely replacing old processes and IT with new ones is known as Direct Changeover. This approach entails a total transition from the existing systems to the new ones all at once, without running both systems simultaneously. It is often favored for its speed in implementation, as it eliminates the need for any overlap between the old and new systems.

Direct Changeover can be effective in scenarios where the new system is fully prepared and tested, ensuring that users have the necessary training and support to adapt to the new processes. However, this method can also pose risks since if issues arise in the new system, there is no fallback option to revert to the old system immediately.

In contrast, other methods like Parallel Running involve operating both the old and new systems concurrently for a period of time, which allows for a smoother transition but can also lead to increased workload and resource usage. Pilot Running tests the new system in a limited capacity before full rollout, and Phased Implementation introduces changes in stages, allowing for adjustments based on feedback from earlier phases. Each of these alternative methods has its own advantages and considerations that make them suitable for different scenarios, but they do not entail a complete and immediate replacement like Direct Changeover does.