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%0 Thesis %A Ohler, Fabian Georg Alexander %T Die Rolle funktionaler Domänenmodelle in der Entwicklung allianzgetriebener Softwareplattformen %I RWTH Aachen University %V Dissertation %C Aachen %M RWTH-2023-12076 %P 1 Online-Ressource : Illustrationen %D 2023 %Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2024 %Z Dissertation, RWTH Aachen University, 2023 %X Today, software platforms are a proven means of integrating products. However, if the organizations involved see themselves as equals, they are reluctant to integrate themselves into any platforms of the others. Instead, they can create a common platform to fulfill the unifying goal, which they design as an alliance. It is characteristic of such ventures that already at an early stage a large number of processes must be brought together and the distribution of functions among the players must be clarified and coordinated. The cross-company design activities of the associated system architecture, which are characterized by collaboration, are to be supported by this work in a suitable methodological and technical manner. For this purpose, an empirically developed method for the derivation of a functional domain model and for the further development to a system architecture description is presented. The functional domain model is of particular importance for the communication within interdisciplinary working groups but also with stakeholders not directly involved in the development. To promote comprehensibility and validation of the artifacts, various visualization options are discussed, the relevance of which has been demonstrated in practice. The method was successfully applied in the domains of mobility and IT security, so that further transferability can be expected. In addition, expert interviews were used to investigate the support of development activities for a system architecture description by software tools. According to these, the tools used to date have deficits with regard to support for collaboration and the integration of various aspects, especially the technical specification and the functional documentation. Requirements for a suitable tool support are presented and compared with existing approaches. For the development phases of protocol design and validation, functional prototypes of tools matching these requirements were evaluated. They were considered and accepted by the users as suitable solutions for the identified weaknesses of previous tools. The problems identified in the prototypes during the evaluation were rated by the users as less important than the benefits achieved. An extension to earlier development phases based on the method presented here seems promising. %F PUB:(DE-HGF)11 %9 Dissertation / PhD Thesis %R 10.18154/RWTH-2023-12076 %U https://publications.rwth-aachen.de/record/975535