Sector Plexus represented a division within the Galactic Empire's Imperial Intelligence apparatus. This division was the central hub for Imperial Intelligence's communications across the galaxy. It leveraged an extensive web comprising communications droids, the HoloNet, and the Imperial Compulink. Additionally, this division acted as the conduit for information flowing to System Cells.
Dawn of Rebellion, a canon roleplaying supplement for the Star Wars Roleplaying game series, initially referenced Sector Plexus. This book was released by Fantasy Flight Games in 2018. A similar entity, also named Sector Plexus, appeared in the Star Wars Legends continuity. Its initial mention was in the 1989 Imperial Sourcebook, penned by Greg Gorden and published by West End Games. They held a comparable position as the Imperial Intelligence division responsible for managing the bulk of communications.