NOS, a Portuguese telecommunications and media company, has significantly enhanced its network monitoring capabilities by adopting Grafana, an open-source observability tool, since 2017. Originally relying on the Business Objects suite for static reports, NOS faced challenges with limited data filtering and inefficient analysis, prompting a shift to Grafana for more dynamic and comprehensive data analysis. With Grafana, NOS engineers can troubleshoot issues in less than a minute, allowing them to efficiently optimize the network and address customer problems. The tool’s ease of use has led to widespread adoption across various teams, enabling them to create custom dashboards and explore new use cases, thus providing a holistic view of the network and improving overall connectivity. As a result, NOS has achieved greater efficiency and better service delivery, ultimately enhancing customer satisfaction in the competitive telecommunications industry.