SAFe Requirements Model
Essentially, all models are wrong, but some are useful.
—George E. P. Box
To support bringing the benefits of Lean and Agile development to larger enterprises—or to smaller businesses building more complex systems—SAFe provides a scalable requirements model that demonstrates a way to express system behaviors: Epics, Capabilities, Features, Stories, Nonfunctional Requirements (NFRs), and more. As shown in Figure 1, each of these work items is expressed in different ways. For example, a feature is described by a phrase, benefit hypothesis, and acceptance criteria; a story is elaborated by a user-voice statement and acceptance ...
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