A CMMS (Computerized Maintenance Management System, known in French as GMAO) is software dedicated to managing the maintenance activities of a fleet of equipment. It centralises the asset inventory (machines, vehicles, facilities, buildings), the work history, the spare parts consumed and the associated costs. The aim is twofold: to make equipment more reliable by reducing unplanned downtime, and to keep the maintenance budget under control through precise tracking of operations.
A CMMS distinguishes between several types of intervention. Corrective maintenance means repairing after a breakdown; preventive maintenance takes place at scheduled intervals or based on usage counters to anticipate wear; and, where sensors are available, condition-based or predictive maintenance is triggered by the equipment's actual state. The central object of the software is the work order, which describes the operation to be carried out, the resources involved, the parts used and the time spent.
A CMMS makes it possible to steer maintenance performance through standardised indicators, notably MTBF (mean time between failures) and MTTR (mean time to repair), which measure the reliability and the maintainability of equipment respectively. These metrics help identify critical assets, size spare-part stocks and decide between repeated repair and replacement.
eyeot's maintenance module applies these principles of asset management and work tracking within the ERP.