The EOSC initiative aims at setting up a complex an articulated “system” consisting of interconnected and interoperating IT systems, policies, procedures, people and activities. The ultimate goal of such a system is to realise an Open Science-oriented working environment where offerings and demand for Open Science enacting commodities (computing and storage, services, data, software, and more in general any research artefacts ) meet. The success of the entire initiative largely depends on the capacity to meet Open Science practitioners demand (namely researchers) and on its “attractiveness” for practitioners willing to play the role of commodity “provider” & “(re)seller”. Resellers will be willing to bring their commodities into the EOSC marketplace if and only if they “see” a business opportunity, if and only if the benefits they may get are higher than the costs they have to sustain. The goal of this session is to identify the set of services EOSC should put in place to “temp” a larger number of “resellers” to contribute to the development of the EOSC marketplace.