CMMS (Computerized Maintenance Management Systems) is software that tracks equipment, schedules maintenance, manages work orders, and optimizes spare parts inventory. Instead of reactive "equipment breaks, fix it," CMMS enables proactive "equipment is aging, replace before it fails." Modern CMMS integrates with IoT sensors (vibration, temperature, pressure) to detect anomalies early. When sensors exceed thresholds, the system automatically schedules maintenance, alerts technicians, and orders parts. Failures become rarer.