Voxxed Days Luxembourg 2023 Room: AmigaOS Type: Tools in Action Is Observability just a buzzword? Observability entails monitoring an application through the lens of the end-user, rather than solely from the system's perspective. This shift in outlook has not just impacted the tools we use, but also our comprehension of applications, particularly in a distributed setting. About this talk In my presentation today, I will introduce you to various methodologies and open source tools (from Open Telemetry, but not only) that can effectively enhance the performance of your applications and simultaneously reduce operational expenses. This includes gaining insight into user behavior, analyzing the influence of your backend on frontend performance, and optimizing resource utilization across your stack. These are just a few of the many advantages that modern observability tools provide, and I will also take this opportunity to introduce you to some of these tools.