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International Standard ISO/IEC 15026-1
Systems and software engineering -- Systems and software assurance -- Part 1: Concepts and vocabulary
ISO/IEC TR 15026-1:2010 defines terms and establishes an extensive and organized set of concepts and their relationships, thereby establishing a basis for shared understanding of the concepts and principles central to ISO/IEC 15026 across its user communities. It provides information to users of the subsequent parts of ISO/IEC 15026, including the use of each part and the combined use of multiple parts.
Coverage of assurance for a service being operated and managed on an ongoing basis is not covered in ISO/IEC 15026.