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Whereas some of the components mentioned here can be mixed-and-matched with some technology variation, 3rd party applications are in particular need of a single (ideally) API that is consistent across all implementations.

Potential Todos.  Define: 
Access-control components. 
Software component repositories (for SOTA)?
Abstract protocol names

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Note on Variations

These component names are to facilitate discussion and description of SW
architecture, but do not strictly put limits on the design.

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