A successful zone defense starts with a few simple principles. The goal is to create a frenetic atmosphere for the offense, rush decisions, and build pride and connection within the defensive group. It also gives players opportunities to take risks and have fun while defending together.
The zone was originally used to accelerate play against teams that were stalling.
When the shot clock was introduced, there was an option to move away from the zone or continue using it without having to sustain the same high pressure for several minutes at a time.
A zone can also become a staple of your team. But it takes time to learn and develop. You have to invest in practicing it and nurturing it before expecting it to work well.