A Dual-Spiral Reengineering Model for Legacy System

Computer Technology has been in existence for many years; as time goes on there is an increasing number of outdated systems. Legacy system reengineering has become a critical effort in many technology organizations. Several reengineering models have been developed, such as the Byrne model and the evolutional model. These models have addressed some of the issues in the reengineering process, but other issues remain. This paper presents a dual-spiral reengineering model, which performs as a cyclic approach, and addresses issues that those models do not, making the reengineering process more successful. This model has been successfully applied to a legacy financial software system reengineering effort.