Au, AU, au or a.u. may refer to:
==Science and technology== ===Computing=== .au, the internet country code for Australia Au file format, Sun Microsystems' audio format Audio Units, a system level plug-in architecture from Apple Computer Adobe Audition, a sound editor program Windows Update or Automatic Updates, in Microsoft Windows Windows 10 Anniversary Update, of August 2016a
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).