Infrastructure projects such as road and bridge construction are complex and expensive construction projects. The more complex the project, the more demanding it becomes to meet the agreed deadlines, quality targets, and cost objectives. The research project “Infra-Bau 4.0” addresses this problem. The goal is to develop a platform on which all partners involved in a construction project are mapped digitally with their various resources and processes and are networked within a single Digital Ecosystem. This will enable effective and efficient planning and re-planning of construction – even for complex projects in a volatile context. As the technical-scientific project lead, Fraunhofer IESE will focus particularly on ecosystem modeling and platform design. The German Federal Ministry of Transport and Digital Infrastructure (Bundesministerium für Verkehr und digitale Infrastruktur – BMVI) is funding the project until the end of 2021 with more than four million euros.