ABSTRACT
Estimation of the likely time and cost to complete the project and in line with it, taking into account the likelihood
of occurrence and severity of the risks' effect, is one of the main concerns that have busied the organizational
project managers. On the other hand, the diversity and sensitivity of information technology risks have caused to
proper risk management, bolder than other issues, influences these projects. Therefore, in order to describe the
degree of potential consequences and probability of occurrence of incidents accurately, IT project managers
benefit from quantitative assessment. One of the most effective tools for quantitative assessment and likely
forecasting of risks is Monte Carlo simulation, which by generating random numbers, calculates the individual
components of a project and determine the impact of each of them on project. In this study, we tried to offer the
functional model of the impact of risks on performance indicators of information technology project and propose
proper time and cost for completing the project under the study by doing a case study and use of software
functionality of Primavera Risk Analysis in Monte Carlo simulation.
Keywords: - risk management, quantitative risk assessment, Monte Carlo simulation, IT Projects.