Abstract
Today, under the matured market circumstance, SOA (Service Oriented Architecture) was worthy of note for enterprises which turn the helm toward the global growth strategy. However, ROI of SOA is not immediately appeared, furthermore SOA is infrastructure therefore, it is very difficult to intuitive understand it effectiveness, so, this difficulty caused hardship getting approval from top management.
These difficulties seems exist in SOA's effect is not deterministic effect, it affected by indeterministic event.
This paper tried to establish decision making process with rational propriety by making consensus among stakeholder for strategic scenario such as supposed changing environment, and reaction of enterprise, and making standard evaluation model with visible risk coefficients.
