Open-source monitoring and alerting toolkit for collecting and querying metrics. Like having a health monitoring system for your applications that tracks everything and alerts you to problems.
Operations teams use Prometheus to monitor application performance and get alerts when response times slow down.
Prometheus is an open-source metrics system. AWS, Azure, and GCP offer managed Prometheus-compatible services that handle scaling, storage, and operations while keeping PromQL querying. OCI does not have a first-party managed Prometheus service; Prometheus is typically self-managed on OCI (often with Kubernetes) or via third-party tooling.