Tanrikulu, CansuCansuTanrikuluGogineni, SonikaSonikaGogineniKondak, KonstantinKonstantinKondakLindow, KaiKaiLindow2023-08-282023-08-282023-08-10https://publica.fraunhofer.de/handle/publica/448762Gaia-X is an initiative to develop the next generation of a secure and federated European data infrastructure to promote digital sovereignty for data exchange to fuel innovations. This paper introduces the basics of Gaia-X, in particular the mobility domain, followed by the federated system and its standards. In addition, a research methodology is presented to help conceptualize and derive requirements for service offerings on a Gaia-X-based data space. This is elaborated with a use case from the project "GAIA-X4 AMS" (Gaia-X4-Advanced Mobility Services), which reflects implementation in Gaia-X ecosystems and its added value.enGaia-Xsmart mobilitydata flowdecentralized federated data ecosystemsdata spaceconference paper