### As COVID-19 has accelerated the world’s migration online, companies are more focused than ever on their digital experience, keeping customers happy through website speed, availability, and performance is paramount. Outages are costly, with companies losing an average of $5,600.00 per minute or over $300,000.00 per hour when their sites are unavailable. Speed matters: for each second of increased page load time, 10% of users leave the site. Monitoring, measuring, and improving digital properties is key to creating great digital customer experiences, with a direct impact on business outcomes. Many site owners rely on Real User Monitoring (RUM) and synthetic monitoring, two major components of Digital Experience Monitoring (DEM), to measure uptime and performance. RUM collects timing and performance information from users visiting websites and applications, while synthetic monitoring informs uptime, functionality, and performance by proactively simulating user transactions to a website. The best monitoring strategies provide end-to-end observability, giving developers a single, holistic framework for improving the digital customer experience through every layer of the stack. Frontend monitoring focuses on measuring what happens after the server has sent information to the web browser and your end users, providing value when using a frontend monitoring solution, such as understanding customer experience, measuring the health of endpoints, APIs, and third parties, and managing inter-reliant technologies and distributed systems. RUM vs. synthetic monitoring provides complementary visibility to end-user experience, with real-user monitoring collecting field data and synthetic monitoring collecting lab data. Observability requires an end-to-end view of system health, and successful digital businesses provide value by improving uptime and performance for both frontend and backend. A comprehensive set of monitoring capabilities is one of the most important tools for delivering great digital customer experiences, requiring all of these monitoring capabilities working together to deliver a truly exceptional experience.