From June 26 to June 30, 2023, the second Data Week took place in the historic New City Hall in Leipzig, Germany. The main theme of the conference was urban development and planning. On Monday, the presentations and keynotes focused on the European Green Deal projects and Data Cubes as a digital data resource to create a geospatial ecosystem for Europe. Tuesday’s focus was on FAIR data, various urban planning topics and different data spaces such as agriculture, biodiversity and climate. 52°North’s Johannes Schnell opened the Climate Data Space panel with a presentation of current projects. Wednesday evolved around AI and the need for semantics when providing data to make it machine readable and processable. The last two days were dedicated to workshops and discussions on sustainability and reproducibility of AI.