The Hybrid game mode is a combination of the Assault game mode (retired from the original Overwatch) and Escort game mode. The attacking team must first battle the defenders to win control of an objective point where a payload sits. Once the point is taken, the payload becomes activated, and attackers must escort it to the delivery point at the other end of the map.
Like Escort, in Competitive mode, the defending and attacking teams will switch each round. The team who successfully takes the objective point and delivers the payload, or escorts it the farthest is the winner of the whole match.