Abstract
In order to improve the value of company by using IT systems, it is important to share the outcomes and risks of IT investment between stakeholders. This paper proposes an "evaluation function" for evaluating the results of IT investment, which can describe the business values of the IT systems. Probability distributions are applied to the parameters of the evaluation function, and the shapes of the probability distributions of the investment effects are determined by the Monte Carlo simulation method. A procedure for decision making is explained in order to incorporate the evaluation function in the risk management process.
