Win and use the transition in a 2v2. On losing it, react immediately to defend or counter-press; on winning it, break forward at once into the space the opponent has left and attack the end zone.
Mark a 22x16 yard pitch with an end zone at each end. 2v2, score by dribbling the ball under control into the opponent's end zone. The moment possession changes, both pairs flip: attack becomes defence and vice versa. Play short, intense reps and keep score. Add a neutral to make it 2v2+1 as a variation.
Nowhere to hide is the entire value of a 2v2, and it is why the format is worth more than its size suggests. With two players a side, nobody can drift, nobody can let a teammate cover for them, and every single turnover is immediately that player's responsibility. A player who switches off is punished within about two seconds and knows exactly why.
The transition roles become trivially simple, which is the point. On losing the ball, the nearest player presses and the other gets goal-side. There is no third option to debate and no way to be the player who did neither. That clarity is why 2v2 works well with younger or less experienced groups who get lost in bigger transition games.
What it trains best is the individual habit rather than the collective one: the physical reaction of turning and going the instant possession changes. In larger games a slow reactor is often covered by a teammate and never learns. Here he concedes.
The cost is genuine and worth planning for. This is the most physically demanding format in the library per minute, and quality collapses quickly. Ninety seconds on, ninety off, with enough pairs to rotate, is roughly right. Run it for six continuous minutes and you are training players to jog through transitions, which is the opposite of the intention.
End zones rather than goals keeps both players involved in both phases and avoids one becoming a permanent defender.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.