The term TREXDUE is composed of three words: SEI, TREX, and DUE. SEI stands for Software Engineering Institute, which is a research and development center at Carnegie Mellon University that focuses on software engineering and cybersecurity. TREX stands for Technical Report Exchange, which is an online repository of technical reports from the Software Engineering Institute. Finally, DUE stands for Digital Unification Engine, which is a software platform developed by the Software Engineering Institute to facilitate collaboration between organizations.