A smart irrigation system using IoT uses connected devices like soil moisture sensors, weather monitors, and flow meters to automate watering processes. These systems monitor real-time soil and climate data to ensure crops receive the right amount of water at the right time. With IoT monitoring, farmers can track conditions remotely and adjust irrigation schedules through mobile apps or dashboards. This reduces water waste and enhances crop health. It's a major shift from traditional watering methods, offering greater efficiency and sustainability. The smart system also contributes to smarter water management across agriculture.