A/B testing landing pages when the entry URL cannot change
Swap destinations behind a stable short link or split traffic at the edge without reprinting QR codes.
Physical campaigns and partner embeds often lock you into one public URL. You can still experiment by changing what that URL does—either a hard switch between periods or a split rule if your infrastructure supports it.
Time-sliced tests
Run variant A Monday–Wednesday and variant B Thursday–Saturday on the same QR. Document the schedule in your analytics layer so you are not comparing unlike days without context. This is crude but honest when you cannot randomize per user at the edge.
Split at redirect
When your redirect service can bucket visitors, keep the public path identical while assigning cohorts. Watch for bias from device type or geography; mobile-heavy placements may not match desktop-heavy email follow-ups.
Winner rollout
After you pick a champion, point the short link 100% to that experience. Archive the losing URL pattern so future editors do not resurrect an old variant by mistake.