The Bogden moons were a collection of moons orbiting the planet known as Bogden. Before the Invasion of Naboo took place, the bounty hunter Jango Fett was contracted by the Sith Lord Darth Tyranus on one of these moons, in exchange for giving Tyranus access to his genetic template. The clones that were subsequently produced using Fett's DNA went on to become the army of the Galactic Republic during the Clone Wars.
The initial reference to the Bogden moons occurred in Star Wars: Episode II Attack of the Clones. Subsequently, they were visually depicted in the video game Star Wars: Bounty Hunter. Their canonical debut happened in Age of Republic - Jango Fett 1, a comic book from Marvel's Star Wars: Age of Republic miniseries, which was made available on January 9, 2019.