The EU-funded CREXDATA project plans to develop a platform for real-time critical situation management, including flexible action planning and agile decision-making. CREXDATA will produce the algorithmic apparatus, software architecture and tools for gathering federated predictive analytics and forecasting in the face of uncertainty. The proposed framework will facilitate proactive decision-making, by providing highly accurate and transparent short- and long-term forecasts, explainable via advanced visual analytics and accurate, real-time, augmented reality facilities. Offered as a platform-as-a-service solution, CREXDATA platform will be evaluated in three use cases: maritime crisis management, weather emergency management and health crisis management.