Tough serves will lead to poor passes, which lead to poor sets and ineffective attacks. In addition, the higher the level of play, the more effective your serves must be. All players on a team should agree to use an aggressive serving strategy. Floaters can be the most difficult serve to pass, and usually the only error is that the ball doesn't float. For hard topspin servers, the error is usually serving into the net or out of bounds.
Servers can also aim deep, short, down the line, between passers, and straight at poor passers.
Servers need to learn how to be effective in different ways. However, there are key times during the game when it is important to not miss your serve. Now your team has an emotional high. This is the worst time to miss a serve. The opponent has scored several unanswered points.