A simplified ERP for IT architecture

Here is a simplified IT systems model. The intention is to represent all the necessary tooling to run a large IT capability. At this level of abstraction there are many ways to partition the problem and draw interfaces - how do you think of it?

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Definition of element management: Element management tools are the control consoles and utilities used by operations and infrastructure staff. The common characteristic of such tools is their support for the most detailed non-programming work in IT management: network administration, database administration, middleware administration, storage administration, operations management (where not otherwise covered) and so forth. Element management tools represent important sources of information and visibility into complex IT operations, including resource unit costs, and the ability to integrate them is desirable.

-ctb