Undoubtedly, every player should be clear about his own role in a party setting. There are three principle roles in a party, tanking, healing and DPS. What role you are best suited for will be determined essentially by your chosen class and talent choices. To help you know more about party roles and behave well in a party, we will introduce the archetypal party roles below.
A tank is a character designed to take a lot of damage from enemies and protect the other ones in the party which includes Protection Warriors, Protection Paladins, and Feral Druids. The major task of a tank is to keep the enemies' attention on them and away from the rest of the party while beating the enemies. A tank has a variety of abilities, such as to keep the monster's undivided attention on them, take much damage and an ability that will taunt the monster off another player and onto them. A tank also has ability or weapon that enables them to pull with a ranged attack, so another role for the tank is to pull enemies for the group. The tank should be responsible for leading the group around to destinations, so he should be the first person into battle and the last one exiting the battle in most cases.
A healer, including Holy or Discipline Priests, Restoration Shamans, Holy Paladins, and Restoration Druids, is responsible for keeping the party alive and well by using their healing spells timely and efficiently. It is very necessary for a healer to have tools of the trade on hand, such as reagents, mana potions, and water. He or she will need some extra mana on occasion and at least on stack of the highest-quality water as backup.
DPS(Damage Per Second) refers to classes whose major role is damage-dealing with the purpose of destroy enemies quickly and efficiently. Melee DPS classes include Rogues, Fury or Arms Warriors, Enhancement Shamans, Retribution Paladins, and Feral Druids. Ranged DPS classes include Mages, Hunters, Shadow Priests, Warlocks, Elemental Shamans, and Balance Druids.