Bastion, situated within the Outer Rim Territories of the galaxy, was an industrialized planet. This world, also a component of the New Territories, possessed a hyperspace route connection to Anthan Prime.
Following the Galactic Civil War's end and the collapse of the Galactic Empire at the hands of the New Republic, a successor to the fallen Empire started taking shape in the Outer Rim. This successor, known as the First Order, coalesced around a series of industrialized planets spanning from Bastion to the world of Yaga Minor.
The Star Wars canon first referenced Bastion on a galactic map featured in Star Wars: The Force Awakens Beginner Game. This was a boxed set released in 2016 for the Star Wars Roleplaying product line by Fantasy Flight Games. In the Star Wars Legends continuity, Bastion, also known as Sartinaynian, debuted in Specter of the Past. This 1997 novel by Timothy Zahn served as the initial book in the Star Wars: The Hand of Thrawn Duology series.