BOXARR enables collaborative modelling, simulation, analysis of complex systems. Combines human-expertise, data and information sources to build a Digital Twin of businesses. BOXARR enables people to collaboratively create Digital Twin models of their complex organizational challenges; capturing human knowledge & expertise through the intuitive medium of Boxes and Arrows. BOXARR models can scale-up to reflect the breadth, depth, and fidelity of inter-dependencies across ‘real world’ organizational systems – with the ability to incorporate hundreds of thousands of ‘Boxes’ and millions of data objects, leveraged from disparate data silos and information systems. BOXARR models can be visualized, filtered, processed, and analyzed across multiple Contexts – for example: as a system-of-systems; by department; by location; by programme-phase; and as data tables/pivots, Gantt charts, and interactive dashboards. Multiple Layers can be overlaid to the baseline model to compare various what-if scenarios; enabling users to quickly identify and mitigate hidden risks and reveal further opportunities for optimization. Users can effectively minimize risk by simulating and evaluating the propagated effects of proposed decisions/changes before they are implemented. Likewise, the diverse impacts of unforeseen events can be readily visualized to enable the timely deployment of collaborative remedial actions. BOXARR’s proven paradigm can be applied and shared across a wide arrange of challenges such as: force design/integration; systems-engineering; programme/mission planning and sustainment; joint-operations; supply-chain resilience; operational & logistical process; and more.