Preference’s decision tool DecideIT enables you to carry out reliable risk and decision analyses. DecideIT packages state-of-the-art decision methodologies and mathematical analysis in an efficient and user friendly software. The decision tool DecideIT comes with an easy-to-use graphical user interface in which decision trees together with criteria hierchies constitute the main schematic overview of the decision architecture. Such models are very useful in cases of complex decisions, as they provide the decision maker and decision analyst with a graphical presentation of the decision situation at hand and shows the internal relations between options, objectives, and uncertain parameters.