Introducing Observatory and Smart Shield — see how the world sees your website, and make it faster in one click

This post introduces Observatory, a new observability tool that unifies real-user data (RUM), backend telemetry (including TTFB breakdown), error rates (edge and origin), cache hit ratios, and synthetic testing (browser and network tests). It also launches Smart Shield, a feature that applies automated fixes for performance bottlenecks identified by Observatory. The post details the importance of RUM as a source of truth, the diagnostic value of TTFB and its sub-components, and the performance benefits of cache hit ratios. It also describes the new network synthetic test type with histogram-based results.