Half a year ago, my team at Trade Republic fully migrated our observability stack from Datadog to LGTM (Loki, Grafana, Tempo, Mimir). Operations after migration are as important as the migration itself, involving ongoing challenges such as performance and scalability issues, bugs, and incidents. In this talk, I’ll share our experiences from the past six months, detailing the challenges we faced and the valuable lessons we learned while using Grafana tools. Join us to gain insights into the practical aspects of managing and optimising an observability stack in a dynamic environment.