| Subject | German | English |
| commun., IT | Directory User Agent | directory user agent |
| inf. | dümmster anzunehmender User | most stupid user imaginable (EDV-Jargon; DAU) |
| gen. | dümmster anzunehmender User DAU | dumbest assumable user DAU |
| phys. | Multi-User-System | multi-user system |
| commun. | Telephone User Part | telephone user part |
| commun., IT | User Datagram Protocol | user datagram protocol |
| comp., MS | User Datagram-Protokoll | User Datagram Protocol (A connectionless transport protocol in the TCP/IP protocol stack that is used in cases where some packet loss is acceptable, for example, with digital media streams) |
| comp., MS | User Story | user story (A high-level description of a user goal that helps you estimate the work needed to achieve this goal. User stories are the fundamental element of planning agile projects) |