Prometheus and OpenTelemetry are two of the most active and popular projects in the CNCF observability landscape. The two communities have been working together since the early days of OpenTelemetry to improve the compatibility between the two projects. The OpenTelemetry Prometheus SIG has been leading this effort, with the active participation of maintainers from both OpenTelemetry and Prometheus. At this point, there is a detailed, experimental specification describing how to convert betwee...