One of the DEF activity areas is marketing of deff.dk aimed at the three primary target groups – students, researchers and teachers at the country’s institutions of higher education.

In 2002-2003 the effort is concentrated on extending the knowledge of and preference for deff.dk as a co-operation between the participating DEF libraries. Such activities as are aimed at augmenting the knowledge of deff.dk (e.g. general campaigns) are co-ordinated by the DEF secretariat, while activities which aim to augment the preference for deff.dk – as a supplement to the local library’s own services – are conducted by each individual library.