Public relations is at the service of a wide variety of institutions in society. To achieve their goals, these organizations must develop effective relationships with very different publics or audiences. This subject intends that the students have competence in the elaboration of the techniques that allow to manage in the best possible way the image of that entity with its publics, both external and internal. In addition, they will pay special attention to the use of the possibilities offered by the Internet, social networks and new online media.