1. In a unified network management platform, a process for modifying a user interface in real time without changing locally-installed applications comprising; receiving, at a console, a plurality of content streams from a server for a plurality of content sites to which a user of the console subscribes, wherein each content site provides a domain specification strictured document containing presentation information for each domain in which the content site places content, the presentation information describing how content is to be presented within a domain in a user interface based on relevance information; determining, by the console, which of the plurality of content sites have relcv to current conditions of use based on the relevance information; creating, by the console, a distinct interface tailored to each relevant content site based on the current conditions and the domain specification structured documents received from the plurality of content sites; and dynamically merging, by the console, the distinct interfaces into a common interface such that the pity, of content streams are presented to the user in a unified manner in at least one domain based on the domain specification structured documents, wherein the at least one domain is a container aggregates content from the plurality of content streams.