Variability Subjects and Variation Points

Variability subjects are a variable item that exists in the real-world, or a variable property of a real-world item. These translate into variation points in the context of a software product line.

An example of a variation point might be an identification mechanism for a home automation system.

Variation points are abstract concepts that are realised by their more concrete variants.

In CVA they’d probably call them just ‘concepts’.


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