What is the relationship between ISO and shutter speed in the exposure triangle rule?

ISO, shutter speed, and aperture make up the exposure triangle in Photography. ISO refers to the sensitivity of the camera sensor to light. Shutter speed controls the amount of time the sensor is exposed to light. A higher ISO allows for faster shutter speeds, while a lower ISO requires slower shutter speeds to achieve proper exposure. Balancing these settings is crucial for capturing well-exposed photos.