The Risk Analysis Tool (RAT) is a dependency modelling program that facilitates Arium’s modelling approach. It guides users through a step-by-step process to better understand risk. Unlike most risk analyses, which focus on perils that may be encountered, a RAT model looks at risk in terms of what you want to achieve rather than what you want to avoid. It helps users build a “top-down” model of their problem by asking them, first, what concrete goals they wish to achieve, and second, what must happen to achieve those goals. The software can then highlight areas of potential weakness in the steps to achieving those goals, providing a clear visual indication of where improvements need to be made. RAT has been applied in organisations ranging from Welsh Water to Fidelity Investments.