This International Standard provides requirements and recommendations for the specification of software product quality requirements. This International Standard applies to organisations in their role as both acquirers and suppliers. The quality model in ISO/IEC 9126-1 [ISO/IEC 25010] is used to categorize software quality requirements and to provide a basis for quantifying the quality requirements in terms of software quality measures. This International Standard complies with the technical processes defined in ISO/IEC 15288:2002, which are relevant for identification of stakeholder product quality needs and for analysis of software product quality requirements. This International Standard does not cover specification of other requirements (such as functional requirements, process requirements, business requirements, etc.). This International Standard does not prescribe specific software quality measures nor does it prescribe any specific development process.