Maintenance, repair and operations (MRO) involves maintaining, repairing, and replacing if necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, governmental, and residential installations. Over time, this has come to often include both scheduled and preventive maintenance as cost-effective practices. Scheduled inspections have also come to fall under MRO purview.

More recently, ‘predictive maintenance’ is being employed, which uses sensor data to monitor a system, then continuously evaluates it against historical trends to predict failure before it occurs.