The Photon and Neutron Open Science Cloud (PaNOSC) is the science cluster representing Photon and Neutron European Research Infrastructures (RIs), developing and providing services for its scientific community and connecting these to the European Open Science Cloud (EOSC).PaNOSC objectives are to:- Participate in the construction of the EOSC by linking with the e-infrastructures and other science clusters.- Make scientific data produced at Europe's major Photon and Neutron sources fully compatible with the FAIR principles.- Generalise the adoption of open data policies, standard metadata and data stewardship from all photon and neutron RIs and physics institutes across Europe- Provide innovative data services to the users of these facilities locally and the scientific community at large via the EOSC.- Increase the impact of RIs by ensuring data from user experiments can be used beyond the initial scope.- Share the outcomes with the community at large to promote the adoption of FAIR data principles, data stewardship and the EOSC.