Industries use many machines every day. If one fails, it can cause delays and loss. AI in IoT helps prevent this by predicting when machines will break down. Sensors collect data on temperature, vibration, or speed. AI studies this data and alerts the team before a problem happens. This is called predictive maintenance. It saves money, avoids downtime, and increases safety. AI in IoT is now a key part of smart factories and Industrial IoT (IIoT).