1. Direct Changeover Benefits Very simple - one system finishes the other starts No resource waste – duplicating work Drawbacks Risky – if there are bugs/errors hidden in the new system there is no system to fall back to. Training issues – all staff must be absolutely 100% sure of how to use the new system from day 1 Old System New System

2. Phased Changeover Benefits Support – can be focused on just one small part of the system Bugs/ Errors - will be easier to find as only a small part of the system is introduced at a time Training – staff have less to learn in one go Drawbacks Using 2 systems – Par of the system will be new part will still be old Old System New System

3. Pilot Run Changeover ` Benefits Whole System– can be tested in just a few places. Not catastrophic if bugs/error found as original system still running in other locations Training / Support - can be focussed on smaller amount of staff Training – staff in the next phase can see the system in action in the first phased Drawbacks Overload – The system may be fine with just a few places using it but when further phases come on line it may not run so efficiently Old System New System

4. Parallel Changeover ` Benefits Backup –if bugs/errors are found and the new system fails there is the old system to fall back to Drawbacks Resource use – Everything is done twice so it takes twice the resources (staff, time ) Old System New System