These slides capture the moment when theory meets reality: user acceptance testing (UAT) is when real users step in, and the perfect flow on paper gets messy – because products can pass QA and still fail UAT.

Each slide reveals why this happens, and why skipping UAT doesn't save time. It just delays the truth and pushes costs to the most expensive moment possible: production.

For a full definition and a breakdown of how UAT works, check our glossary article on user acceptance testing.