It was constructed by the InterGalactic Banking Clan using materials specially ferried by Banking Clan Cargo Ships, and used as a refueling and repair station for the Confederacy of Independent Systems at the beginning of the Clone Wars.
Shortly after the Battle of Geonosis General Sev'rance Tann was assigned to the platform to rebuild the shattered droid armies of the Separatists. Clearing out the local population of mynocks that had found a refuge there, Sev'rance used the old facilities to construct many dwarf spider droids and homing spider droids. Galactic Republic General Jor Drakas eventually discovered the build-up, but Sev'rance was able to evacuate her new forces in time.
The Kaer Orbital Platform appeared in Separatist campaign of the 2002 LucasArts video game Star Wars: Galactic Battlegrounds: Clone Campaigns. The level was designed by Lily Mansfield, who chose the name Kaer as a variation of the Welsh word caer, meaning fortress.
- The Complete Star Wars Encyclopedia