A set of policies, procedures, standards, processes, practices, tools, techniques, and tasks that people apply to technical and management challenges is called methodology.
The stage of the system development life cycle (SDLC) known as system implementation is when the developed system is put into use in a real-world setting and users are given access to its advantages. The choice of an implementation strategy is the first and most important task during the system development phase. Researchers who study the SDLC name four different implementation strategies, including pilot, phased parallel, and plunge.
When adopting the plunge implementation technique, the organization immediately stops using the old system and switches to the new one. The danger of a system failure is higher with this method yet it is less expensive than the parallel way. The plunge technique has the most risk because it is impossible to recover to the old system in the event that the new system fails.
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