A published event from a first content element executing within a framework may be detected. In response, a registry may be searched for one or more registered events that match the published event, and if a matching registered event is found, a second content element that registered said matching registered event may be instantiated to start executing within the framework. The second content element is dynamically aggregated into the framework based on the published event without the first content element needing to have previous knowledge of the second content element, and without the second content element needing to have previous knowledge of the first content element. The framework also does not need to be designed initially to deploy the second content element. Which one or more content elements to aggregate into the framework may be determined at run time rather than at design time.