PromCon EU 2025 marked the tenth conference fully dedicated to the Prometheus monitoring system. Held on 21- 22 October 2025 at the Google office in Munich, Germany, the event brought together Prometheus users and developers from around the world to exchange knowledge, share best practices, and discuss real-world experience using Prometheus. The conference also fostered collaboration, strengthened the global community, and helped grow professional connections across systems and service monitoring.