Clash of the Creators is a livestreaming event, originally created by Xisuma for Hermitcraft in cooperation with the Monumenta Server and Plagiatus.
Lots of creators from the minecraft community battle it out in various different challenges. Each team has their own server, but each server has the identical world.
The contest is run simultanously and in parallel with each other over a period of a few hours.
Scoring is competitive; teams are informed of other teams' completion in real time, and being the first to complete challenges yields higher scores.
The team with the highest score wins!