@article{WulfWestnerStrahringer, author = {Wulf, Frederik and Westner, Markus and Strahringer, Susanne}, title = {We have a platform, but nobody builds on it - what influences Platform-as-a-Service post-adoption?}, series = {International Journal of Information Systems and Project Management}, volume = {10}, journal = {International Journal of Information Systems and Project Management}, number = {1}, issn = {2182-7788}, doi = {10.12821/ijispm100103}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-33778}, pages = {49 -- 70}, abstract = {When higher-level management of a company has strategically decided to adopt Platform-as-a-Service (PaaS) as a Cloud Computing (CC) delivery model, decision-makers at lower hierarchy levels still need to decide whether they want to post-adopt PaaS for building or running an information system (IS) - a decision that numerous companies are currently facing. This research analyzes the influential factors of this managerial post-adoption decision on the IS-level. A survey of 168 business and Information Technology (IT) professionals investigated the influential factors of this PaaS post-adoption decision. The results show that decision-makers' perceptions of risks inhibit post-adoption. Vendor trust and trialability reduce these perceived risks. While competitive pressure increases perceived benefits, it does not significantly influence PaaS post-adoption. Controversially, security and privacy, cost savings, and top management support do not influence post-adoption, as opposed to findings on company-level adoption. Subsamples constructed by the form of post-adoptive use (migration of IS, enhancement of IS, new IS development) exhibit better goodness-of-fit measures than the full sample. Future research should explore this interrelation of the form of post-adoptive use and the post-adoption influence factors.}, language = {en} } @article{StrahringerWestner, author = {Strahringer, Susanne and Westner, Markus}, title = {Von der IT-Leitung zur (Mit-)Gestaltung der digitalen Transformation}, series = {HMD Praxis der Wirtschaftsinformatik}, volume = {59}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer}, doi = {10.1365/s40702-022-00875-8}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-39922}, pages = {717 -- 720}, abstract = {Die entsprechenden Antworten, wie die IT-F{\"u}hrung in Unternehmen auszugestalten sei, ist Gegenstand vielf{\"a}ltiger Forschung und im Ergebnis situativ aber nicht abschließend zu beantworten. Das vorliegende Schwerpunktheft greift diesen Aspekt auf und beleuchtet die Zukunft der F{\"u}hrung in der IT.}, language = {de} } @unpublished{KratzerWestnerStrahringer, author = {Kratzer, Simon and Westner, Markus and Strahringer, Susanne}, title = {Four Decades of Chief Information Officer Research}, organization = {Association for Computing Machinery (ACM)}, doi = {10.1145/3614178.3614182}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-54208}, abstract = {Despite the relevance and maturity of the Chief Information Officer (CIO) research field, no studies exist that exhaustively summarize the current body of knowledge, focusing on the development of the field over its entire timespan. The paper at hand addresses this research gap and presents an exhaustive literature review on the CIO research field using main path analysis. We identify the central papers in CIO research and eight main research streams by quantitatively and qualitatively analyzing 466 papers. We find that established research streams, e.g., 'Evolving role of the CIO' and 'CIO hierarchical position and relationships' as well as recently emerging research streams, e.g., 'CIO as business enabler' and 'CIOs and IT security,' draw growing attention. Based on our findings, we develop promising further avenues for research in the CIO field.}, subject = {Informationsmanager}, language = {en} } @inproceedings{WulfLindnerStrahringeretal., author = {Wulf, Frederik and Lindner, Tobias and Strahringer, Susanne and Westner, Markus}, title = {IaaS, PaaS, or SaaS? The Why of Cloud Computing Delivery Model Selection}, series = {Proceedings of the 54th Hawaii International Conference on System Sciences, 2021}, booktitle = {Proceedings of the 54th Hawaii International Conference on System Sciences, 2021}, isbn = {978-0-9981331-4-0}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-7913}, pages = {6285 -- 6294}, abstract = {Most large-scale organizations adopted Cloud Computing (CC) on a company level in recent years. Managers now face the challenge to appropriately implement CC "operationally", i.e., for information systems (ISs). We refer to this as post-adoption, addressing the extent of technology usage after adoption. Specifically, managers need to choose among the CC delivery models Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-asa-Service (SaaS). We differentiate the determinants of this post-adoption decision for IaaS, PaaS, and SaaS. Based on this analysis, we derive criteria that guide managers' delivery model selection: Adopt 1) IaaS for ISs requiring flexibility and reduced time to market, 2) PaaS to access specialized resources, and 3) SaaS to focus on core competencies. Moreover, we analyze the impact on the CC strategy and postulate them as recommendations: I) acknowledge the interplay between governance and time-to-market, II) realize cost savings on company level, and III) consider strategically important ISs for CC.}, language = {en} }