There are many ways to implement an ERP system, some effective, others not-so-much. For most companies, the result is a significant change in the way work was done in the past.  The Implementation Process gets you from your current state to your desired future state. Typically, a quick start implementation of 6 to 8 weeks only includes very basic core functions, such as accounting, some inventory, and order entry. These run the range from do-it-yourself projects to others doing it for you as well as phased implementations to “big-bang” deployments where all features go online simultaneously. There are many other factors that make up a successful implementation.

Source: LogicData