Kirdan, ErkanSchindler, JosefWaedt, KarlKlein, MaikeKrupka, DanielWinter, CorneliaWohlgemuth, Volker2023-11-292023-11-292023978-3-88579-731-9https://dl.gi.de/handle/20.500.12116/43128This paper explores the value and benefits of implementing advanced logging techniques within OPC UA deployments in Node.js. OPC UA is a leading protocol for interoperable and secure data exchange in industrial automation and IoT, among other complex data communication systems. Adopting sophisticated logging strategies can optimize its deployments on Node.js. The paper uses a case study to demonstrate the real-world impact of integrating robust logging solutions into OPC UA deployments. It underscores how such practices can improve system reliability, increase debugging efficiency, enhance security, and understand system performance. This valuable insight aids developers and system administrators in managing and maintaining complex OPC UA deployments, reinforcing the critical role of a well- implemented logging strategy. By analyzing a specific instance of an OPC UA server-client pair implemented in Node.js, the paper invites a broader discussion around the optimization strategies that could further strengthen the robustness and security of OPC UA systems. It aims to open avenues for more research, encouraging a continuous drive towards more efficient and secure industrial automation and data communication systems.enopc ualoggingdebuggingText/Conference Paper10.18420/inf2023_1991617-5468