Certain aspects of the disclosure are directed to providing aggregated context information in a data communications network. According to a specific example, a data communications server can operate to provide user-data communications sessions each involving a client-specific endpoint device and another participating endpoint device, where the client-specific endpoint device is associated with a client-entity among a plurality of remotely-situated client entities. User-data communications between the client-specific endpoint device and the other participating endpoint device can be retrieved from a plurality of disparate interconnected data communications systems, where the data communications systems each provide at least one data communications service to the client entity on a subscription basis. Context information for each respective user-data communication between the client-specific endpoint device and the other participating endpoint device can be aggregated and displayed in a disparate-system data room, where the aggregated context information includes an indication of the context for each user-data communication.