This deliverable reports on the findings of the Use Cases analysis, with a special focus on the community requirements and on the opportunity to extend every single Use Case to other communities. The document contains a report on a first state of the art and community needs from each Use Case. The present document is the result of several months activities driven by the WP6 and centred on the analysis of the Use-cases submitted by the scientific communities involved in the EOSC-Pillar project. The main aim of the deliverable is to present “the state of the art” through a cross-cutting analysis in order to identify commonalities and synergies among the UCs with regards to technical requirements and needs. Finally, some options are suggested in terms of common actions and developments.