1. An apparatus for managing a plurality of entities within a data center or network, the apparatus comprising: a processor and a memory communicatively connected to the processor, the processor configured for: determining, for an event of interest, a corresponding entity of interest; determining, for a root cause of the event of interest, a corresponding root cause entity; performing a visualization function configured to provide image representative data including a root cause object and an entity of interest object arranged within an image region in accordance with a hierarchical order to form thereby a correlation tree; and in response to data indicative of a selection of said entity of interest object, said visualization function being further configured to provide image representative data of at least one first object representing an entity impacted by said event of interest, said at least one first object arranged within said image region in accordance with said hierarchical order.