While Prometheus is software for monitoring and alerting, it is open-source and is used for time-series data. Therefore, it can analyze time-series data to identify and create real-time alerts. Another fundamental idea of this monitoring software is that it is installed locally in each node, making it independent and reliable because it is not centralized. Currently, it is used a lot for container platforms like Docker, OpenShift, etc, because it is scalable, independent, reliable, and can analyze this time-series data.