The eastern exurbs existed on the planet of Christophsis. During the Clone Wars in 22 BBY, a conflict between the Galactic Republic and the Confederacy of Independent Systems, these exurbs became the location of the refugee camp led by Republic Senator Bail Prestor Organa, and the compound for the Minister of Sustenance. During the Confederacy's invasion of the world, these exurbs, along with the senator's humanitarian efforts, were targeted by the droid army under the command of Separatist General Whorm Loathsom of Kerkoiden. Furthermore, the confederate government's planetary blockade commanded by Harch Admiral Trench dispatched a squadron of Hyena-class Droid Fighter/Bombers to initiate a bombing raid on the refugee camp.
The initial appearance of the eastern exurbs occurred in "Cat and Mouse," which represents the sixteenth installment of the first season of Star Wars: The Clone Wars. This episode was broadcast on March 26, 2010. Their official identification took place later in Star Wars: On the Front Lines, a 2017 reference book penned by Daniel Wallace.