Managed service for 24/7 monitoring of manufacturing production lines, factory equipment, and control system networks, providing anomaly detection, fault response, and performance optimization. Includes communication monitoring between FA equipment, PLC, SCADA, MES, and ERP systems, industrial Ethernet and fieldbus operation monitoring, security monitoring, and backup/recovery support. Operation and maintenance service that prevents production downtime due to network failures in manufacturing sites, achieving improved equipment availability and predictive maintenance. Provides monitoring system by specialized engineers from remote monitoring center and emergency response.