The goal of the “Austrian Transition to Open Access” (AT2OA) project is to support the large-scale transformation of scientific publications from Closed to Open Access, and to implement measures supporting this initiative. The project aims to increase Austria’s Open Access publication output by restructuring licence agreements with publishers and by providing targeted support for researchers’ publication activities. It will also establish new venues for Open Access publishing. The subprojects will examine the following topics: (1) Impact analysis of the transition to Open Access. (2) Funding for transitional Open Access business models. (3) Publication funds. (4) Support for Open Access publications and alternative Open Access publication models. These subprojects will be supplemented by networking and knowledge transfer activities.