1. A method comprising: in an event notification system comprising collaboration circuitry in communication with a database interface and a communication interface: retrieving, through the database interface, defined roles assigned to geographically distributed entities and communication pathway preference information for the geographically distributed entities; generating, with the collaboration circuitry, an event notification for distribution concerning an event; implementing, with the collaboration circuitry, an adaptable subscription model configured to determine selected entities among the geographically distributed entities to which to send the event notification, where the adaptable subscription model is configured to identify the selected entities responsive to the defined roles in comparison to the event; determining, with the collaboration circuitry, communication pathways, supported by the communication interface, for sending the event notification to the selected entities, based on the communication pathway preference information for the selected entities; and transmitting the event notification to the selected entities over the communication pathways.