Prometheus 3.0 release enhances its integration with OpenTelemetry through a feature known as resource attribute promotion, which streamlines dashboard creation and metric exploration by promoting OpenTelemetry resource attributes as metric labels. This functionality, enabled by default on Grafana Cloud, simplifies the correlation between Prometheus metrics, Grafana Loki logs, and Grafana Tempo traces, addressing challenges like dashboard filtering and metric exploration. Resource attribute promotion is backward compatible, ensuring existing queries and dashboards remain functional while enabling users to move away from Prometheus naming conventions and fully adopt OpenTelemetry semantic conventions. The feature supports richer community dashboards and offers best practices such as providing deployment details and enriching promoted attributes to improve observability workflows. Additionally, it maintains consistency in Prometheus and Loki alignment, supports backward compatibility by retaining job and instance labels, and integrates seamlessly with existing OpenTelemetry Collector and Alloy pipeline implementations. The adoption of resource attribute promotion facilitates the use of standardized and reusable PromQL queries, particularly for key RED metrics, enhancing the observability and performance monitoring of services.