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Non-functional requirements in industry - three case studies adopting the ASPIRE NFR method

: Doerr, J.; Kerkow, D.; Koenig, T.; Olsson, T.; Suzuki, T.

Fulltext urn:nbn:de:0011-n-285850 (420 KByte PDF)
MD5 Fingerprint: ad292d1f95cf1bfcf4f785b837059b56
Created on: 18.05.2005

Kaiserslautern, 2005, VII, 26 pp. : Ill., Lit.
IESE-Report, 025.05/E
Reportnr.: 025.05/E
Report, Electronic Publication
Fraunhofer IESE ()
ITEA; EMPRESS; case study

Non-functional characteristics of products can be essential for business success and are a key differentiator between a company and its competitors. This paper presents the application of a systematic, experience-based method to elicit, document, and analyze non-functional requirements called ASPIRE NFR. The objective of the method is to achieve a minimal and sufficient set of measurable and traceable non-functional requirements. The method gives clear guidance for the requirements elicitation, using workshops for capturing the important quality aspects and eliciting the non-functional requirements. This paper shows its application in three different settings, reporting the experience and lessons learned from industrial case studies that applied ASPIRE NFR. As the case studies were applied in different domains and performed with companies of various maturity, and since different quality attributes were considered, a set of interesting results has emerged. Therefore, each case study tells its own story about how the elicitation of NFR in industry can work. The paper discusses the different settings and gives a comparison of the different lessons we learned from the case studies.