ab-testing

General-purpose A/B testing (split testing) for any project built or maintained by coding agents: websites, web apps, mobile apps, dashboards, and edge/serverless stacks. Covers hypothesis design, sample-size math, stack-aware variant implementation, event tracking, low-traffic alternatives, pre-flight review, honest analysis, and ship-or-no-ship decisions. Use whenever the user wants to test a UI/UX change, compare two versions of a page, feature, button, headline, onboarding flow, pricing display, or copy; run an experiment or split test; do conversion rate optimization; or asks "which version performs better" or "should I change this" — even without saying A/B test. Also covers agent-specific advantages: reading the actual codebase to produce mergeable variants, persona pre-flight before spending traffic, wiring bucketing logic, and writing statistical analysis when results arrive. Works across Next.js, React, Vue, Workers, React Native, and greenfield repos with no prior experiment setup.