The Star Wars universe became a little more complicated with the debut of the World Between Worlds in Star Wars: Rebels. While there's still a lot that audiences have to learn about this strange dimension, what is clear is that it opens portals to different periods from across the Star Wars timeline. It aided Ahsoka during Rebels in escaping the dangerous wrath of Darth Vader and was used again in Disney+'s Ahsoka to reunite the student with the master. The World Between Worlds is deeply linked to the Force, and while its mysterious nature will always be protected, it's plausible that audiences will see it many more times.
Source：https://www.cbr.com/ahsoka-world-between-worlds-trend/
