Run-Boost:

Run-boost is a movement technique where one player jumps or crouches to give a teammate extra height and reach, letting the team access a position that would be impossible or difficult to get to alone.

In Counter-Strike 2, it is used to create early sightlines, surprise angles, and fast map control by placing a player on top of another player or on a boosted ledge while both keep moving. It matters because it can open off-angles, improve information gathering, and force opponents to clear unexpected positions. For example, on Mirage, two players can use a run-boost near mid to get a teammate onto a box or ledge for a better view of connector or top mid before the enemy expects it.

Related: Boosting, Map Control, Sightline, Off-Angle