Which are the ways for a direct support of open access Diamond journals ?

The project The socioeconomics of scientific publication of the French Committee for Open Science has published a study on Diamond open access journals business models. The final report presents the results by proposing four models for Diamond open access journals direct support, highlighting the parts of the publication process that could be directly funded (after identifying the various players), and specifying the technical conditions for implementing a direct funding model. The report also identifies the advantages and limitations of such models.