1. A computing system, comprising: a processing unit; and a memory storing computer executable instructions for managing event notifications between an external entity and an enterprise entity, the computer executable instructions when executed by the processing unit causing the computing system to: receive an external event notification identifying an event, wherein the event is an update to data stored in a data source maintained by the external entity; based at least in part on the external entity, automatically perform at least one operation responsive to the event; and in response to performing the at least one operation, send an event notification message to at least one user associated with the enterprise entity, wherein the enterprise entity is not in direct communication with the external entity.