Static thresholds miss the slow creep and the quiet swap. PulseTrace baselines each signal and fingerprints your external surface, then surfaces the moment latency, availability or a DNS / TLS / HTTP fingerprint steps outside its own normal.
Baselines are learned per signal and per monitor, so what's normal for one endpoint never masks a regression in another, and an open anomaly is tracked as a single episode rather than a stream of point alerts. Change detection fingerprints DNS records, the TLS chain, HTTP response fingerprints and page content on every check and diffs them — so a silent certificate swap, a new redirect or a moved A record surfaces the moment it happens, on the same timeline as your uptime.