The ISO 42010 standard says: concern <system> interest in a system relevant to one or more of its stakeholders. Concerns are basically system requirements
A concern can be small or large, general or specific, anything or everything.
Some statements by stakeholders regarding their concerns:
Our concern is to halve the order to delivery time. Stakeholders: Novotny, Bencsch
Our concern is throughput. Stakeholders: Damnd. Software development manager.
Our concern is next financial year budget deltas. Stakeholder: J. CFO. COO.
Our concern is prevention of unauthorised access. Stakeholders: Novotny, Volny
Our concern is the disability access law. Stakeholders: Company lawyer. Software development manager.
Thus a "concern manifestation" is a stakeholder's general interest in the subject matter. A type of concern is entirely contained within one or two system components, being tightly related to the application domain.
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