Grafana is phasing out its legacy alerting system with the release of Grafana 11, urging users to upgrade to the more advanced Grafana Alerting system to prevent disruptions. Initially introduced with Grafana 9, Grafana Alerting provides a more powerful, scalable, and unified alert management system that is decoupled from dashboards, offering features such as Prometheus integration, advanced alerting rules, flexible notification management, dynamic templating, native as-code support, and high availability modes. Users can utilize the upgrade preview tool in Grafana 10.4 to transition smoothly, ensuring their alerts and configurations align with the new system before legacy alerting is completely removed. The changes affect Grafana OSS and Enterprise users, while Grafana Cloud users have already been upgraded. The new system enhances control and efficiency through single-pane management, customizable notifications, and robust access control, addressing community feedback and simplifying alert management across various environments.