Implementation

Methods of implementation	Advantages	Disadvantage
Parallel Running	If the system didn’t work properly there is a backup system	It is a slow method of implementation
Direct Changeover	It is a quick method of implementation	There is no backup system
Phased Implementation	People can get used to the system	If the system didn’t work properly it is impossible to fall back to the old system
Pilot Running	If the system didn’t work properly, not all branches are affected	It is a slow method