This International Standard specifies the contents of both high-level and detailed descriptions of context of use for an existing, intended, designed or implemented system, product or service. The context of use description is applicable to software and hardware systems, products or services (excluding generic products, such as a display screen or keyboard). The description of the context of use is intended to be used as part of system-level documentation resulting from development processes such as those in ISO 9241-210 and ISO/IEC JTC 1/SC 7 process standards. This International Standard does not prescribe any kind of method, life cycle or process. The context of use information item can be integrated into any type of process model. NOTE For the purpose of establishing process models, ISO/IEC TR 24774[16] and ISO/IEC 15504-2[9] specify the format and conformance requirements for process models, respectively. In addition, ISO/IEC 15289[8] defines the types and content of information items developed and used in process models for system and software life cycle management. ISO/IEC 15504-5[10] and ISO/IEC 15504-6[11] define work products, including information items, for the purpose of process capability assessment. Process models and associated information items for human-centred design of interactive systems are contained in ISO/TR 18529[13] and ISO/TS 18152[12], respectively. This International Standard also describes the purposes for which context of use descriptions are used, and identifies the intended users of context of use descriptions. While this International Standard specifies the required content elements of a context of use description, it does not prescribe any particular structure or layout for documenting the context of use.