Grafana Cloud's Synthetic Monitoring provides real-time DNS monitoring capabilities to help prevent application failures due to domain name resolution issues. This system allows users to proactively verify that domains resolve to the correct IP addresses and measure the speed of these resolutions, thereby identifying potential DNS-related performance problems before they affect users. By setting up DNS checks, users can monitor network performance, detect security threats such as DDoS attacks, and ensure consistent DNS performance across global locations. The process involves creating a Grafana Cloud account, navigating to Synthetic Monitoring, and configuring DNS checks, including setting request targets, timeout periods, probe locations, test frequencies, and alerts. Once configured, Grafana Cloud offers real-time data visualization through preconfigured dashboards that provide insights into key metrics like uptime, latency, and reachability. The platform's free tier includes a generous allotment of test executions, making it accessible for users to implement and manage DNS checks effectively.