If I had to speculate why Prometheus is doing well, I'd put the simplicity of deployment and ongoing operations first, and probably the great integration with K

If I had to speculate why Prometheus is doing well, I'd put the simplicity of deployment and ongoing operations first, and probably the great integration with Kubernetes second. I think that if it had gone with a push-based model it would have been just as successful. Push vs Pull is unrelated to integrating service discovery. Right now I push metrics to Datadog. It can tell if my metrics are operating or not, because it's aware of the state of the Datadog agent and of what the EC2 API reports.