Beilschmidt, ChristianDrönner, JohannesMattig, MichaelSchweitzer, PhilipSeeger, BernhardKönig-Ries, BirgittaScherzinger, StefanieLehner, WolfgangVossen, Gottfried2023-02-232023-02-232023978-3-88579-725-8https://dl.gi.de/handle/20.500.12116/40363Geo data portals play a key role in the distribution and exploitation of domain-specific geo data.While such portals are highly specialized, they share a number of common requirements that span from data access and processing to UI components.Geo Engine is able to provide all the necessary parts for portal building.We demonstrate this on a real data portal we built for the Dragonfly community.In addition, we show its general architecture and outline future improvements.enGeo processingData portalsText/Conference Paper10.18420/BTW2023-55