Reengineering in software engineering is a method of development that involves changing the way physical work is done in the “real world” as well as creating the software required to support the altered work patterns. Reengineering stems from the ample evidence that computerization of a “real world” work process does not automatically make it more efficient. To increase productivity, developers and clients may attempt to redesign the way physical work is done and alter the process to be more productive. In many companies, for example, after the credit department grants credit, the receiving department receives goods, and the accounting department writes checks.
Any software can become obsolete after some time, and if the productivity of an organization relies upon it, at that point, there various issues that may show up. They can be averted; however, for this, it is important to start a few estimates, which include the programming reengineering process.