The Pinterest Performance Team implemented Nimble, a HeadSpin product, to
create regression tests that run on Android builds generated from code changes and alerted Pinterest when a PWT metric exceeded designated thresholds.
When there were no alerts, they knew the app was good to go, which boosted confidence in merging pull requests and releasing it to Pinners.
When they did receive alerts, they resolved the regressions in ~21 hours, which is far less time than the multiple days it previously took the team to identify and fix a regression.