Grafana is an open-source analytics and monitoring platform that enables users to create, visualize, and share interactive, real-time dashboards from various data sources. It is widely used for visualizing time series data from databases like InfluxDB, Prometheus, and Elasticsearch, making it ideal for monitoring infrastructure, applications, and system performance. Grafana supports customizable panels, alerting, and integrations with a variety of tools, providing flexible and powerful visualizations. Its user-friendly interface and extensive plugin ecosystem make it popular for DevOps teams and businesses seeking real-time monitoring and insights.