Consistent with ISO vocabulary standards, each technical committee is responsible for standard terminology in its area of specialization. This document provides a common vocabulary applicable to all systems and software engineering work falling within the scope of ISO/IEC JTC 1/SC 7, Software and systems engineering, and the IEEE Computer Society Systems and Software Engineering Standards Committee (IEEE‐CS S2ESC). The scope of each concept defined has been chosen to provide a definition that is suitable for general application. In those circumstances where a restricted application is concerned, a more specific definition might be needed. Terms have been excluded if they were: considered to be parochial to one group or organization; company proprietary or trademarked; multi‐word terms whose meaning could be inferred from the definitions of the component words; and terms whose meaning in the information technology (IT) field could be directly inferred from their common English dictionary meaning.