4D.watcher® is a process monitoring solution for industrial laser applications. It transforms process signals into meaningful monitoring results by automatically evaluating incoming sensor data, comparing it with references, and generating reliable OK/NOK decisions. Designed for plug-and-play deployment and easy operation, 4D.watcher helps users monitor processes, detect deviations, and maintain consistent production quality. It seamlessly integrates with 4D.TWO® sensors and supports communication with PLCs, OPC UA, and higher-level IT systems.