Trust in data platforms is further increased if the business model of the operators of the platforms is transparent and understandable to the potential users of the platform. Therefore, TRUSTS will explore and develop its sustainability plan in open discussion with stakeholders from large, small, and medium enterprises, as well as with existing non-governmental organisations. TRUSTS brings together technology providers (RSA, KNOW, SWC, FhG, FORTH) that are already deeply involved in two existing major national data market projects (Data Market Austria and Industrial Data Space) as well as one already planned to be commenced in 2020 (Heraklion Digital Marketplace, which will be implemented by FORTH in collaboration with the Municipality of Heraklion) to create a European Data Market based on secure and trustworthy data exchanges. This integration will be tested in practice by 6 companies (EMC, REL, LST, EBOS, and the data providers FNET and PB), addressing three different use-cases, identified as most promising by the consortium. The TRUSTS technology and use-cases will be constantly accompanied by business, legal and ethical considerations, which, raised at the level of Work Packages, will ensure that the results of the project are sustainable beyond the duration of the funding and compliant with current and forthcoming regulatory frameworks. For this, two universities (TUD, KUL) and one innovating startup (G1) will work together to create a successful European Data Market operator. To enable the expansion beyond the given Use Cases, two multipliers (IDSA, DIO), currently operating primarily at national level in Austria and Germany, but with strong links at European level, will engage European stakeholders beyond the operators and finance domains.