Alexander Hollberg is an Assistant Professor for Computational Sustainable Design at the Department of Architecture and Civil Engineering at Chalmers University of Technology. After his PhD studies at Bauhaus University Weimar and a postdoc at ETH Zürich, Alexander joined the research group Sustainable Building to develop methods and tools that facilitate the design of sustainable buildings and cities. The digital tools are used to assess, optimize, and visualize the design’s performance in real-time (energy, LCA, LCC, daylight, etc.). The goal is to provide decision-makers with the necessary information in the early design stages. Since 2017, he is an expert for digitalization for the German Sustainable Building Council (DGNB). Furthermore, he is co-founder and Head of R&D at CAALA, a software and consulting startup based in Munich, Germany.