LinkedIn, a global leader in professional networking, faced challenges managing its complex infrastructure, including legacy systems and custom-built technologies. The company's internal synthetic monitoring system struggled with limited visibility and delayed issue detection, resulting in prolonged Mean Time to Detect (MTTD) and frequent service disruptions. To address these challenges, LinkedIn partnered with Checkly, adopting its Monitoring as Code solution to modernize and enhance reliability. By automating TLS monitoring, implementing dynamic API checks, and integrating Playwright-based tests into its CI/CD pipeline, LinkedIn significantly reduced MTTD and empowered its engineers to take ownership of monitoring. The integration provided real-time visibility into user experience, reduced costs through efficient testing processes, and ensured critical user flows were protected during deployments.