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Agile elicitation of scalability requirements for open systems: A case study

Abstract

Eliciting scalability requirements during agile software development is complicated and poorly described in previous research. This article presents a lightweight artifact for eliciting scalability requirements during agile software development: the ScrumScale model. The ScrumScale model is a simple spreadsheet. The scalability concepts underlying the ScrumScale model are clarified in this design science research, which also utilizes coordination theory. This paper describes the open banking case study, in which a legacy banking system becomes open. This challenges the scalability of this legacy system. The first step in understanding this challenge is to elicit the new scalability requirements. In the open banking case study, key stakeholders from TietoEVRY spent 55 h eliciting the scalability requirements of TietoEVRY’s open banking project. According to TietoEVRY, the ScrumScale model provided a systematic way of producing scalability requirements. For TietoEVRY, the scalability concepts behind the ScrumScale model also offered significant advantages in dialogs with other stakeholders.
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Category

Academic article

Language

English

Author(s)

Affiliation

  • SINTEF Digital / Software Engineering, Safety and Security
  • University of Oslo
  • Diverse norske bedrifter og organisasjoner

Date

12.08.2021

Year

2021

Published in

Journal of Systems and Software

ISSN

0164-1212

Volume

182

View this publication at Norwegian Research Information Repository