This webinar will provide a theoretical basis for a general understanding of the digital and infrastructural turn in the (Digital) Humanities and Cultural Heritage along with theoretical and critical reflections around the topic: Which opportunities and challenges do Cultural Heritage and Digital Humanities Research Infrastructures offer for research(ers)? The webinar will further explain how different stakeholders can engage with Research Infrastructures (community engagement and user engagement). Examples are research communities and networks, transnational digital collections, thematic working groups, overarching organisations (ERIC platforms, the Research Data Alliance), conferences and workshops, Transnational Access, Research Infrastructures in Academic Curricula. As a general introductory webinar it will also touch on some aspects of the other webinars in the PARTHENOS Webinar Series including a short introduction of the research lifecycle. This webinar will feature “teasers” from several Research Infrastructures, such as short introduction videos or webcontent).