Data producers are hosted in structures attached to what are known as “Établissements Publics” – that is, literally, “Public Institutions”. The nature of these institutions may vary according to their intrinsic activities: administrative (EPA - Établissements Publics à caractère Administratif); cultural, scientific and professional (EPCSP - Établissements Publics à caractère Culturel, Scientifique et Professionnel); industrial and commercial (EPIC - Établissements Publics à caractère Industriel et Commercial); or scientific and technological (EPST - Établissements Publics à caractère Scientifique et Technologique).