This taxonomy has been prepared by the secretariat of the United Nations Commission on International Trade Law (UNCITRAL) to map the main legal issues relating to emerging digital technologies in trade. It covers the key topics of artificial intelligence, data, digital assets, online platforms, and distributed ledger systems. For each topic, the taxonomy defines key concepts, explores the actors, legal relationships and legal issues involved, and appraises the application of existing legislative texts developed by UNCITRAL. The publication supports the central and coordinating role of UNCITRAL within the United Nations system in addressing legal issues related to the digital economy, and is designed to guide future legislative projects aimed at enabling digital trade.