Explore the groundbreaking implementation of W3C's Network Error Logging (NEL) at Wikipedia in this 31-minute conference talk from SREcon23 Americas. Discover how the Wikimedia Foundation leveraged NEL to detect user-facing outages with unprecedented accuracy and speed. Learn about the technology behind NEL, the implementation decisions made by Wikimedia, and examine real-world case studies where NEL outperformed traditional monitoring methods. Gain insights into how this innovative approach can revolutionize website reliability monitoring, potentially transforming how organizations detect and respond to network issues affecting user experience.