Explore the intersection of web performance and observability in this 45-minute conference talk by Emily Nakashima at performance.now() 2019. Discover how the observability community's focus on user happiness aligns with web performance goals. Learn about Honeycomb's approach to instrumenting their customer-facing web app and how they leverage observability data to identify and resolve complex performance issues, enhance customer productivity, and drive feature design. Gain insights into the practical applications of observability in web performance optimization and understand how these two fields can inform and improve each other's practices.