Further, it can produce temporary time series through queries. These time series are identified by their metric name and ‘labels’. PromQL (Prometheus Query Language) generates queries and helps users choose and collect real time series metrics. With PromQL, you can configure alert settings to get notifications at other sources as well such as email, Slack or PagerDuty. In Prometheus web interface, you can visualize this data in the form of tables or graphs. Or, you can even use other display tools like Grafana through API integrations.