Playing tennis on clay vs hard court
As on clay, where the ball reacts to the court, depending on which spin is applied, topspin is very effective. It doesn’t grip the surface quite as much as it does on clay but the ball regularly bounces high and since the proliferation of hard courts, topspin and in particular the topspin or kick serve have become very much the norm, overtaking the slice.
Rallies are longer than on grass but generally shorter than on clay. Flat, hard hitting works well because the surface, usually medium-fast, can be quick, depending on how much sand is used in the top layer of paint.
Slice can also cut through the court and in general, hard courts are considered to be the fairest surface - thanks in part to the true bounce - offering a good balance between attack and defence, between those who look to go forward and finish the point at the net to those who like to hug the baseline and who generally only venture to the net to shake hands when the match is over.