The Hamburg universities for computer science: University of Hamburg, Technical University of Hamburg, HafenCity University Hamburg and Hamburg University of Applied Sciences. The aim is to create the conditions for long-term, cross-university cooperation in computer science as a foundation for digitalization. ahoi.digital is based on three fields: education, research and transfer. In terms of content, we focus on four core topics in computer science that are worked on across the universities and are intended to form the focal points of the computer science activities of Hamburgís universities: cognitive systems; smart & cyber physical systems; information governance technologies; data science. Our alliance strengthens cooperations with urban clusters and the link between science and business to companies. As a competence center and network, we provide impulses for start-ups and innovation.