When a partner submission system is already up and running, the main challenge becomes consistently turning findings into production changes and proving their impact with metrics. In this talk, I’ll walk through our practical cycle: finding → fix → impact validation → scaling the pattern across multiple teams. We focused on metrics that turn SRE into a manageable system. We measure the speed, stability, and cost of changes so that decisions are driven by data rather than intuition — with security now embedded as part of this pattern. We’ll break down how to avoid “local” fixes, make changes reproducible, and sustain progress continuously rather than as a one-time effort.