What is Acceptance Testing? — UK Software Development Guide

4 min readJune 2025ClickMasters Technical TeamReviewed by James Whitmore, CTO
what is acceptance testing

Direct Answer

Acceptance testing is the process of verifying that a software system meets business requirements and is ready for deployment. User Acceptance Testing (UAT) involves real users testing the software against predefined acceptance criteria before sign-off. In agile development, acceptance criteria are defined upfront for each user story and tested at the end of each sprint.

Acceptance-testing in the UK

Acceptance testing is the mechanism for client sign-off in ClickMasters fixed-price contracts. Acceptance criteria defined during Technical Discovery determine exactly what "done" means for each feature. The Sprint Review demo is where the client performs acceptance testing. Formally rejected items (not meeting acceptance criteria) are fixed at no additional cost within the original scope. Change requests (new requirements not in the original spec) are scoped and priced separately. This formal acceptance process protects both parties — the client knows exactly what they'll get, and ClickMasters knows exactly what they're building.

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