Segmentation can explain why a release worked, but unrestricted slicing almost guarantees a surprising chart. Begin with groups linked to the product hypothesis: new versus established customers, high versus low frequency users, platform, geography or plan.
Check sample size and pre-release behaviour before comparing outcomes. A segment with very few eligible users or a very different starting point needs careful interpretation.
Treat unexpected patterns as questions to investigate, not immediate conclusions. Validate event quality, review qualitative feedback and see whether the pattern persists across a sensible period.
A strong briefing separates planned comparisons, exploratory findings and unresolved signals. This helps teams act on robust evidence without ignoring useful clues.