This book constitutes the proceedings of the 20th International Conference on Perspectives in Business Informatics Research, BIR 2021. The conference was held during September 22-24, 2021.The 16 papers presented in this volume were carefully reviewed and selected from 49 submissions. They were organized in topical sections as follows: Technology adoption and acceptance during COVID-19 times; conceptual modeling for enterprise systems; enterprise modeling methods and frameworks; compliance and normative challenges; and empirical investigations on digital innovation and transformation prerequisites.

This book constitutes the proceedings of the 19th International Conference on Perspectives in Business Informatics Research, BIR 2020. The conference was initially planned to be held in Vienna, Austria, during September 2020. Due to the COVID-19 pandemic it was postponed to be held together with BIR 2021. The 14 papers presented in this volume were carefully reviewed and selected from 48 submissions. The papers were organized in topical sections as follows: Digital Transformation and Technology Acceptance; Multi-perspective Enterprise Models and Frameworks; Supporting Information Systems Development; Literature and Conceptual Analysis; and Value Creation and Value Management.

This book constitutes the proceedings of the 18th IFIP WG 8.5 International Conference on Electronic Government, EGOV 2019, held in San Benedetto del Tronto, Italy, in September 2019, in conjunction with the IFIP WG 8.5 IFIP International Conference on Electronic Participation (ePart 2019) and the International Conference for E-Democracy and Open Government Conference (CeDEM 2019). The 27 revised full papers presented were carefully reviewed and selected from 64 submissions. The papers are clustered under the following topical sections: E-Government Foundations; E-Government Services and Open Government; Open Data: Social and Technical Aspects; AI, Data Analytics and Automated Decision Making; and Smart Cities.