Scooter Braun speaks at the Billboard Power 100 event in 2023.
Christopher Polk/Billboard via Getty Images
- Scooter Braun announced he's retiring from music management after 23 years.
- Braun is best known for guiding the careers of young stars like Justin Bieber and Ariana Grande.
- He also made headlines for buying Taylor Swift's back catalog, which led to an explosive feud.
After discovering one of this century's biggest pop acts, Justin Bieber, as a tween in the 2000s...