The large research infrastructure LINDAT/CLARIAH-CZ represents the Czech national node (distributed among 17 participating partners from 15 institutions) of the pan-European research infrastructures CLARIN-ERIC (Common Language Resources and Technology Infrastructure), DARIAH-ERIC (Digital Research Infrastructure for the Arts and Humanities) and EHRI-ERIC (European Holocaust Research Infrastructure, in the process of being prepared). LINDAT/CLARIAH-CZ collects, processes, annotates (manually and automatically) and stores linguistic, multimedia and other data related to the Czech language environment, including from a historical perspective. At the same time, it provides open access not only to these data, but also to technologies, particularly relevant for the humanities and social sciences and related interdisciplinary research (e.g. formal and computer linguistics, translatology, lexicography, psychology, sociology, neurolinguistics, cognitive sciences or artificial intelligence). In the field of digital arts and humanities, which includes literature and literary sciences, history, including research on the Holocaust and genocides of the 20th century, historical bibliography, culture and science of culture, art history, philosophy, film and film history including new media and their analysis, visual arts, musicology and history of music, ethnology, folklore, archaeology, Egyptology and interdisciplinary research across them, including combination with modern technologies. LINDAT/CLARIAH-CZ is significantly involved in the development of the CLARIN DSpace data repository, which it provides to cooperating organizations at the national and international level. The main objective of the infrastructure is to make digitized data resources in these disciplines available to the broad scientific community, including the software services necessary for the efficient use of these resources, in an open mode. The infrastructure program also includes educational activities.