Concordia, a satellite of the planet Mandalore, was a moon. Pre Vizsla held the position of governor over it. The abandoned mines situated on Concordia were utilized as secret hideouts by the Death Watch, an organization under the leadership of Vizsla himself.
Before the conclusion of the Mandalorian conflicts, Concordia was transformed into a mining outpost by rebellious factions. The moon's forest nearly faced complete destruction due to the mining operations. Nevertheless, following the war's end, the mines were deserted, allowing the forests to regenerate. In the aftermath of the Mandalorian Civil War, the New Mandalorians banished all Mandalorian warriors to Concordia as a form of exile, where they were thought to have died.
During the Clone Wars time, Concordia had evolved into a province of Mandalore, complete with its own governor. However, the governor of Concordia, Pre Vizsla from House Vizsla's Clan Vizsla, was covertly orchestrating the splinter group known as Death Watch from within the mines. Din Djarin, a member of the Children of the Watch, spent his formative years on Concordia. The Children of the Watch later found refuge on Concordia, which allowed them to survive the Night of a Thousand Tears.