Browser Synthetic Monitoring is a proactive approach that uses automated testing scripts to ensure the continuous availability and performance of websites or applications. It simulates user interactions using virtual agents, providing real-time oversight and identifying issues before they impact real users. This approach offers various benefits, including effective health monitoring, reducing mean time to detect (MTTD) and mean time to resolve (MTTR), having engineers own quality, and ensuring service level agreement (SLA) compliance. Browser Synthetic Monitoring can be deployed in different forms, such as scheduled jobs or on-demand snapshots, and is available through various tools like Checkly, which provides a Monitoring as Code (MaC) workflow that streamlines testing and monitoring efficiency. By leveraging synthetic monitoring, organizations can enhance software quality, delivery speed, and user satisfaction, while reducing the need for frequent manual checks.