The International Conference on Perspectives in Business Informatics Research (BIR) series focuses on the fields of business informatics and information systems. It targets the research that bridges business applications and information systems engineering, and facilitates the communication between scientists and practitioners. The 18th BIR conference was held in Katowice during September 23–25, 2019, at the Centre for New Information Technologies (CNTI), University of Economics in Katowice, Poland. The theme of the conference was “Responsibilities of Digitalization – Responsible designing & shaping the future of technology for digital preservation, global data storage and cost-effective management”. This volume contains publications presented during the conference workshops and Doctoral Consortium. More specifically: • The 2nd workshop on Security Analytics – a Business Informatics Perspective. The main goal of this workshop is to discuss how security threats could be prevented, detected and investigated; • The 4th workshop on Managed Complexity (ManComp). The ManComp purpose is to share research result regarding system complexity identification, representation, control and reduction; • The 11th workshop on Information Logistics and Digital Transformation (ILOG). The major objective is to discuss approaches for digital transformation, information logistics, semantic technologies and knowledge-based systems; • Doctoral Consortium of BIR 2019, where young researchers can present their results and receive constructive feedback from the senior experts. Each workshop as well as the Doctoral Consortium had its own organizers and the international program committee. After the peer-review process, the BIR 2019 workshop program committees have selected 13 scientific papers for the presentation and inclusion to this volume. Other four papers were selected by the BIR2019 Doctoral Consortium organizers. All contributions research and present the significant and emerging topics of the business informatics. As chairs of BIR2019 workshops, we would like to express our great thanksto all workshop organizers, organizers of the Doctoral Consortium, program committee members of all workshops, BIR conferences organizers, and all the BIR 2019 workshop and Doctoral Consortium authors for their invaluable contributions.