Full edition for scientific use. The EOSC-Pillar ”National Initiatives” Survey is a cross-section study in Austria, Belgium, France, Germany, and Italy. The survey aims at landscaping national initiatives of open research data and services with relevance to the European Open Science Cloud (EOSC). Four target groups are part of the study: e-infrastructures, research infrastructures, universities and funding bodies. The survey contains questions on the perception of EOSC as well as detailed questions assessing e.g. the e-infrastructures’ business models, technical characteristics, access conditions, FAIRness of the data holdings and adopted policies related to open science.