In today's digital landscape, a great user experience (UX) is crucial for businesses to succeed. UX refers to the overall experience a user has when interacting with a product or service. A well-designed UX can lead to increased customer loyalty, revenue, and engagement. User Experience Optimization (UXO) involves making data-driven improvements to enhance the user's experience. Real User Monitoring (RUM) records and analyzes digital customer interactions, providing insights into performance, errors, and latency. Businesses need to deliver a flawless coordination of multiple services and systems to ensure a great customer experience. With 80-90% of end-user wait time spent on the client side, businesses focused solely on uptime are missing opportunities to increase customer engagement and improve business results. RUM is essential for understanding how technology impacts customers and quantifying how slow sites impact customer funnel engagement, end-user tolerance, and business outcomes. Observability tools like New Relic can help businesses improve their users' experience by providing real-time data from real-user behavior with extensive details and correlation.