View MODAF:StV-2 Capability Taxonomy View



The StV-2 Capability Taxonomy View is part of the MODAF Strategic Viewpoint* and one of the 47 MODAF views*.

Version & Date

Version 1.2.004.

* =  changed at 1.2.004

+ =  new at 1.2.004

See MODAF Release History.


From The MODAF Strategic Viewpoint p5:

The StV-2 presents capabilities and the hierarchical relationships between them.

Subject to Crown Copyright


From The MODAF Strategic Viewpoint p6:

The StV-2 presents a hierarchy of capabilities. StV-2 specifies all the capabilities that are referenced throughout one or more architectures – i.e. one StV-2 may provide the definitive list of capabilities for a number of logical and physical architectures. In addition it can be used as a source document for the development of high level use cases and Key User Requirements (KURs).

Subject to Crown Copyright


From The MODAF Strategic Viewpoint p8:

The Capability Taxonomy (StV-2) View specifies a hierarchy of capabilities. A capability taxonomy persists over time (an architect may wish to specify historical, current or future capability) and may be referenced by multiple architectures. The capabilities specified in an StV-2 are extensively re- used in operational, system and acquisition views – in this way, the concept of capability is integral to any MODAF architecture.

In MODAF, a capability is a description of an ability to do something. In StV-2, the capabilities are only described in the abstract – i.e. StV-2 does not specify how a capability is to be implemented. An StV-2 is structured as a specialisation hierarchy of capabilities, with the most general at the root and most specific at the leaves. At the leaf level, capabilities may have a metric specified, along with an environmental qualifier for the metric:

Subject to Crown Copyright

Data Objects*

From The MODAF Strategic Viewpoint p7:

The data in an StV-2 can include:

  • Capability
  • Capability Specialisation (relationship between capabilities)
  • Capability Composition



Full size:File:MODAFStV-2CapabilityTaxonomy simplifiedMM.gif

Subject to Crown Copyright


  • Tabulation
  • Hierarchical (Connected Shapes)
  • ML Class Diagram (with generalization and aggregation relationships).

Configuration History

1.2.004 Enterprise Phase removed from data objects i.e. StV-2 can no longer include Enterprise Phase / describe capabilities in the context of enterprise phase as was the case in 1.2.003


‘Architecture’ should read ‘architecture description’.

Other Frameworks

See also:


Category:Framework -> View
Category:MODAF -> View



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