Browsing by Author "Gomes de Oliveira Neto, Francisco"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Challenges of Aligning Requirements Engineering and System Testing in Large-Scale Agile: A Multiple Case Study
    (IEEE, 2017) Gomes de Oliveira Neto, Francisco; Horkoff, Jennifer; Knauss, Eric; Kasauli, Rashidah; Liebel, Grischa
    As agile methods become more pervasive, agile practices are applied to more large-scale systems with a scope that goes beyond pure software. The expansion of agile in these contexts provides benefits, but creates new challenges. Widespread use of agile has changed the way we must think about practices both in Requirements Engineering (RE) and in System Testing (ST). Our experience shows that many challenges in the application of large-scale agile development relate to either RE or ST, and in particular to the alignment between these areas. In this paper we present large-scale agile-related challenges from a multiple case study which relate to REST alignment. We map our challenges to an existing framework for REST alignment, and make an initial attempt to suggest agile RE practices from the literature which may alleviate these challenges. Our results show that the interviewed companies need to first adopt more agile RE practices to enhance REST alignment and then leverage agile testing. Future work will look more towards evaluating these best practices.
  • Thumbnail Image
    Item
    Requirements engineering challenges and practices in large-scale agile system development
    (The Journal of Systems & Software, 2020) Kasauli, Rashidah; Knauss, Eric; Horkoff, Jennifer; Liebel, Grischa; Gomes de Oliveira Neto, Francisco
    Agile methods have become mainstream even in large-scale systems engineering companies that need to accommodate different development cycles of hardware and software. For such companies, requirements engineering is an essential activity that involves upfront and detailed analysis which can be at odds with agile development methods. Objective: This paper presents a multiple case study with seven large-scale systems companies, reporting their challenges, together with best practices from industry. We also analyse literature about two popular large-scale agile frameworks, SAFeR and LeSS, to derive potential solutions for the challenges. Method: Our results are based on 20 qualitative interviews, five focus groups, and eight cross-company workshops which we used to both collect and validate our results. Results: We found 24 challenges which we grouped in six themes, then mapped to solutions from SAFeR , LeSS, and our companies, when available. Conclusion: In this way, we contribute a comprehensive overview of RE challenges in relation to large-scale agile system development, evaluate the degree to which they have been addressed, and outline research gaps. We expect these results to be useful for practitioners who are responsible for designing processes, methods, or tools for large scale agile development as well as guidance for researchers