user acceptance test
noun [ C ]
ukus(abbreviation UAT) IT
the final stage in the development of a piece of software in which the customer is asked to use it to see if there are any problems that still need to be corrected before it can be accepted:
The consultancy firm will design user acceptance tests and control the UAT process.
user acceptance testing
noun [ U ]
User acceptance testing validates the product's performance against the original specification.