Conversion is the process of changing from the old system to the new one. A detailed conversion plan is essential to insure that all aspects of conversion are treated properly and validated. They include data conversion, procedure conversion and training. Programming translates the design specification into software, thus providing the actual instructions for the computer. Programming constitutes a smaller portion of the systems development cycle than design and perhaps testing activities.
Production is the operation of the system once it has been installed and conversion is complete.
The system will be reviewed during production by both users and technical specialists to determine how well it has met its original objectives and to decide whether any revisions or modifications are needed. Maintenance is modifications to hardware, software, documentation or procedures to a production system to correct errors, meet new requirements or improve processing efficiency. Implementation is all the organizational activities working toward the adoption, management, and routinization of an innovation such as an information system. That is, all the activities to actually have an innovation operational. Role of users, management support, the handling of complexity of the project, and management of implementation determine the success or failure of the implementation of the information system.