Stassia Alley represented a hyperspace route that had a single endpoint at Coruscant, a planet located within the Coruscant system of the Corusca sector. This sector's Coruscant subsector formed a portion of both the Interior and Core Worlds regions of the galaxy. From there, the route extended into the Deep Core region of the galaxy. At Coruscant, Stassia Alley connected to the Corellian Run, the Perlemian Trade Route, the Metellos Trade Route, the Namadii Corridor, and the Koros Trunk Line, which itself was a component of the larger Nexus Route.
In the year 34 ABY, a partial map of the galaxy, displaying Stassia Alley, was available for viewing by passengers aboard the Chandrila Star Line's Star Cruiser, the Halcyon. This occurred during a voyage from the Chandrila system in the Core Worlds to the Outer Rim Territories.
The Star Wars: Galactic Starcruiser, an interactive role-playing experience at Walt Disney World Resort in Florida, featured Stassia Alley on its galaxy map. This experience opened to the public on March 1, 2022, and concluded on September 30, 2023. Within the Star Wars Legends continuity, Stassia was identified as a planet within the Core Worlds.