Star Wars: The Clone Wars is one of the most prolific television series of its time and continues to influence the whole of the Star Wars universe. The Clone Wars filled in a plethora of blanks that remained open during the titular war that took place between Star Wars: Episode II - Attack of the Clones and Star Wars: Episode III - Revenge of the Sith.
Source:https://www.cbr.com/ahsoka-star-wars-clone-wars-characters-cameos/