The Boost Jump is an Exosuit ability in Call of Duty: Advanced Warfare that is available in all game modes. It allows for much higher jumps and gives a factor of verticality to the game. To be performed, the player must double tap the jump button.
In Call of Duty: Black Ops III and Call of Duty: Infinite Warfare, the Boost Jump is respectively replaced by the Thrust Jump and the RCS Thrusters, less effective versions which reduces the "thrust meter" with each use, rather than instantly recharging when touching the ground. They also do not let the player jump as high.