We've faced challenges with frontend monitoring at Datadog, including flaky acceptance tests, tool sprawl, and limited visibility into user behavior. To address these issues, we enhanced our digital experience monitoring (DEM) products by integrating Synthetic Monitoring, RUM's Session Replay, and Error Tracking. This enabled us to catch problems before they affected users, accelerate debugging, and streamline our investigative workflows. By using Synthetic Monitoring, we transitioned from acceptance tests to browser tests, reducing costs and maintenance requirements. Datadog Continuous Testing allows us to run tests in parallel, at scale, and in multiple environments. Session Replay provides maximum visibility into user journeys, while Error Tracking simplifies the troubleshooting process by embedding critical contextual information within each issue. By incorporating these tools, we've optimized our frontend testing and debugging, enabling us to ship high-quality features faster and quickly address issues impacting users.