 The enterprise information security architecture will document the current state of the technical security components listed above, as well as an ideal-world desired future state (Reference Architecture) and finally a "Target" future state which is the result of engineering tradeoffs and compromises vs. the ideal.Essentially the result is a nested and interrelated set of models, usually managed and maintained with specialised software available on the market.Such exhaustive mapping of IT dependencies has notable overlaps with both metadata in the general IT sense, and with the ITIL concept of the configuration management database.