How exactly does Taunt work in PvP

As the topic says…how exactly does the taunt ability work in a PvP match???

The character controlled by the enemy can target freely, so I guess you are just taunting the non-controlled enemies. Its useless when there is only 1 enemy left (unless he is autoing), but can be good enough while there are a bunch of enemies alive

Is exactly what Gtsaiko said, you taunt all bot/npc controlled characters, if the player is not on auto he won’t get taunted

AI targets taunted heroes unless they’re invisible.