What does the implementation stage primarily involve?

The implementation stage in the system development life cycle is primarily focused on replacing the existing system with the new system. This stage is critical as it involves putting the new system into operation, which can include installing hardware, configuring software, training users, and transferring data from the old system to the new one. It marks the transition where the new setup is actively used in a live environment, ensuring that all components are working as intended and that users are able to perform their tasks under the new configuration.

This phase is essential because it allows stakeholders to see the benefits of the new system firsthand, and it is the culmination of previous planning and development activities. While testing and evaluation are important stages that occur before and after implementation, the primary focus during the implementation stage is on making the new system operational and replacing the old one rather than just assessing its functionality or producing documentation.