As one of the world's first "DecisionTech" companies, Decision Hall translates digital modelling and advanced collaboration techniques pioneered at the European Space Agency to the realm of social, environmental, and technical challenges. We take on the complex and the urgent to come up with robust, evidence-based solutions that are defensible and satisfactory to multiple stakeholders. Additionally, we create digital model repositories so knowledge gained along the way doesn't get lost. By mapping out possible scenarios early and reusing precious knowledge, we ensure that complex projects can be accelerated, de-risked, and executed with lower costs and improved outcomes.