Starter Builds are preset talent builds created for players who prefer not to choose their own talents yet, but want a decent build that is suitable for most content.
For now, Starter Builds are only available to Evokers on the Dragonflight Beta, but all classes will have them when the new expansion launches.
How Do Starter Builds Work?
Switch to your desired Specialization. From the Loadout Tab dropdown, select Starter Build.