What "free climb" means in rock climbing

Free climb is a technique used in rock climbing where climbers ascend a route without relying on artificial aid. This means that the climbers do not use any equipment or tools to push or pull themselves up the rock. Instead, they only use their strength, skills and ability to grip the rock to ascend. Free climbing is seen as a challenging and rewarding method of climbing that tests the climber's endurance and capability to overcome obstacles.