The dome tent has a more robust design, with poles that cross each other diagonally. Most commonly there are 2 to 4 poles which provide a number of crossing points and higher stability. This design is frequently chosen for extreme conditions, e.g. in the Polar Regions or in the mountains. The advantage is that once the poles are assembled, the tent is firm and tight. All you need then is to anchor it to the ground firmly enough so that it doesn’t blow away.