1. Distinguishing between needs and requirements
Needs and requirements engineering activities are divided into two processes (standardized to ISO/IEC 15288).
definition of stakeholder needs (steps 1 to 3); the result of the process is to present the problem and detail its expected characteristics from a user and customer point of view;
definition of the system's technical requirements (steps 4 to 6); the result of the process is to present the problem and detail its technical characteristics from a designer's and supplier's point of view, i.e. one that enables him to design and realize a potential product, service and/or organizational system.
These processes are carried out, often by different actors, iteratively and concurrently for the same system, and recursively on the different levels of decomposition of the system...
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Distinguishing between needs and requirements
Identify the problem, the opportunity, the stakeholders, their needs and constraints
Bibliography
International standards
ISO/IEC 15288:2008 - Systems and software engineering - system life cycle processes, Geneva, Switzerland: International Organization for Standardization (ISO)/International Electronical Commission
ISO/IEC 29148: 2011 - Systems and software engineering - Life cycle processes - Requirements engineering, Geneva, Switzerland:...
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www.incose.org International Council on Systems Engineering (INCOSE) is a not-for-profit membership organization founded in 1990. Its mission is to share, promote and advance the best of systems engineering from across the globe for the benefit of humanity and the planet.
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