What is changeover method in system development cycle?

The changeover method in the system development cycle refers to the process of transitioning from an old system to a new one. It can be implemented in various ways, including direct changeover, where the old system is immediately replaced by the new one, and phased changeover, where the new system is gradually introduced in stages. Other methods include pilot changeover, which tests the new system in a limited environment before full implementation, and parallel changeover, where both systems operate simultaneously for a time to ensure the new system's effectiveness. The choice of method often depends on factors like risk, complexity, and organizational needs.