Win-Win Spiral Model
Boehm and Ross (1989) extended the original spiral model by including considerations related to stakeholders. The win-win spiral model uses the theory W management approach, which requires that for a project to be a success, the system’s key stakeholders must all be winners. The way to achieve this win-win condition is to use the negotiation based approach to define a number of additional steps of the normal spiral development cycle. The additional steps are the following: • Identify next-level stakeholders. • Identify stakeholders’ win conditions. • Reconcile win conditions. • Establish next-level objectives, constraints, and alternatives. • Evaluate product and process alternatives. • Resolve risks. • Define the next-level of product and process, including partitions. • Validate product and process definitions. • Review and commit. The advantages from a win-win spiral model is the collaborative involvement of stakeholders that results in less rework and maintenance, early e...