Illustrative embodiments disclose systems for sharing, among a group of consumers, data provided by a contributor. Some embodiments are well-suited for real-time distribution of data developing from ongoing incidents, and may be useful, for example, for emergency management. Illustrative embodiments provide a cloud-based system having tenants that are data contributors and data consumers. The system receives, from each contributor, both data and sharing rules that dictate whether and how that data may be shared, and with whom (which consumer or consumers), and then provide data to such consumer or consumers according to the sharing rules.