The four common methods of installation (or updating from older versions) for software are
?
- Direct cut-over
- Parallel
- Phased
- Pilot
Direct cut-over
Direct cut-over Involves
?
- the old system being completely deprecated and instantly replaced by the new system
Parallel
Parallel involves
?
- operating both systems together for a period of time
Phased
Phased involves
?
- a gradual introduction of the new system
- the old system is progressively discarded
- commonly:
- module by module
- location by location
Pilot
Pilot involves
?
- the new system is installed for a small sample size of users
- used to evaluate the new system
- once deemed to be performing accordingly, the new system is deployed globally
