Alliance Prime was the seat of power of the loosely allied Alliance worlds, and the meeting location for the Alliance Council. The Supreme Arbiter, Sarek of Vulcan, and Deputy Arbiter Koval both maintained officers on Alliance Prime. In 2283, an apparently chance encounter between Guinan and Tal, then commander of the Cormier, led to her saving his life from shoddy repairs; this led to Tal accepting Guinan as a passenger and adviser on the ships he served on. It is unclear if Alliance Prime was a planet or another type of space station or outpost.