The Consortium of European Social Science Data Archives (CESSDA) aims to form a European infrastructure for the social sciences, where researchers can go for data, tools, advice and knowledge exchange. DANS is a member of CESSDA ERIC and involved in several projects of CESSDA. From the Technical Framework and Tools working groups, DANS contributes to the development and implementation of new data services. In the field of Training, DANS contributes to training materials and data management courses for social scientists and trainers (such as the CESSDA Data Management Expert Guide). In addition, DANS is active within the Trust working group that deals with the certification of European data archives.