Aldus is a network of European book fairs. The project will establish a first kernel and start working to broaden it to a pan-European level.Starting points are the presence in Europe of the 3 leading B2B book-fairs in the world (2 are Aldus partners), and the rich variety of national book fairs, open to the public (5 are project partners). The former are already the place for professionals to meet at global level, the latter have a big potential to complement this by offering visibility to national book communities at European level. The network between the two will foster targeted mobility between professionals, joint events and knowledge transfer.The dialogue between publishers is the prerequisite for translations, i.e. for the mobility of literary works, which is the primary objective of the project, supported by dedicated networking and training activities. Book fairs are also an occasion for capacity building in the areas of internationalisation, digital shift, and audience development. In the recent past, big conferences on digital trends and ex cathedra seminars have been organised at all the fairs. This model does not work anymore, and many of these initiatives have come to an end. Aldus aims at experimenting new formats, more interactive and engaging.Inviting publishers to be the audience of new format events is also the occasion for them to learn about these new formats. The fairs are also a key place for publishers to directly interact with readers; however, the form of this interaction is still traditional. Supporting publishers to experiment new ways of using the fairs to engage with their audience is another project objective.The network starts with the 2 B2B book fairs and others in small countries or dedicated to small publishers. This is the ideal test bed. Occasions will be organised to meet with other fair organisers and invite them to join, which is also the basis to ensure continuity to the Aldus life in the future.