Implementation Stage

• Focus: Installing and releasing the system to end-users and monitoring its usage.
• Feedback: System usage feedback should be directed to the post-implementation team for ongoing support.

Approaches to System Conversion:

1. Phased Conversion:

   • The new system is implemented in stages or modules, one part at a time.
   • Reduces risk by allowing gradual adaptation to the new system.
   • Example: Implementing the new system in one department first, then moving to others after successful testing.

2. Pilot Conversion:

   • The new system is introduced to a small group of users before a full rollout.
   • Helps to identify issues in a controlled environment before broader implementation.
   • Example: Testing the system with one branch or office before deploying it across the organization.

3. Parallel Conversion:

   • The new and old systems run simultaneously for a certain period.
   • Allows comparison between the two systems, ensuring the new system works correctly before decommissioning the old one.
   • Reduces risk, but it’s resource-intensive as both systems require maintenance during the overlap.

4. Direct Cutover (Big Bang):

   • The old system is completely replaced by the new system in one go.
   • High risk but also fastest approach if successful.
   • Example: A company switches to the new system over a weekend, with the old system decommissioned once the new one is operational.

Approaches

When to use each System Conversion

• Phased Conversion:

  • Best for large, complex systems where implementing everything at once could be risky.
  • Allows gradual transition and easier management of any issues.
  • Suitable when you want to minimize disruption to the organization.

• Pilot Conversion:

  • Useful when you’re unsure of how the system will perform and want to test it in a smaller, controlled environment.
  • Ideal for organizations that can afford to experiment with a single department or group.
  • Good for risk management, as you can iron out problems before a full-scale rollout.

• Parallel Conversion:

  • Used when the organization needs high reliability and cannot afford downtime or loss of data.
  • Suitable for critical systems where both old and new systems run together to ensure the new one functions correctly.
  • Helps reduce risk, but can be resource-intensive as both systems need to be maintained simultaneously.

• Direct Cut (Big Bang):

  • Works well for smaller systems or organizations with limited complexity.
  • Chosen when a quick transition is needed, and the business can tolerate some risk and potential downtime.
  • Best when time or cost constraints do not allow for a phased or parallel approach.