Worked on the kyma-project/istio repository to implement unified Prometheus metrics merging by enabling the prometheusMerge feature in the Istio operator. This involved toggling feature flags in two YAML configuration files, activating consolidated metrics collection across Istio components. The change enhanced observability by providing a single source of Prometheus metrics, which supports more reliable dashboards and streamlines incident response and capacity planning. Focused on configuration management, the work required careful adjustment of operator settings to ensure seamless integration. The update did not involve bug fixes but delivered a targeted feature improvement using YAML and configuration management best practices within the Istio ecosystem.