End users, and more precisely end users involved in acceptance testing decide whether a new application or system will go live or not. Therefore it is very important they are in the same pursuit of quality as the rest of the project. End users are no dedicated testers, although sometimes we expect them to be. Just by looking at their available time for testing, we already know they are not. The fact that they are not trained to be testers, doesn’t make it easier. But are we really looking for dedicated testers here? During this presentation, Erik will explain how you can involve end users in such a way that we optimize their added value during their testing activities. An error often made in projects is that end users are only involved during test execution. It’s by having them participate in the test process on regular, well selected moments that we can get the best out of acceptance testing. By means of a case study, Erik points out these moments. To start with, the acceptance testers need to know the goal of their testing activities. Knowing that, the acceptance testers are already involved at the end of the analysis phase in order to help the writing and prioritisation of high level test scenarios together with setting up the entry criteria for starting the acceptance test phase. Consequently, the acceptance testers will get demos on a regular basis of the software already delivered. These demos deliver valuable information, both for the project team as for the end users. And finally, after having assessed the test readiness of the system through system testing, the end users will execute their test cases closely monitored by the test coordinator. While executing the tests, it is up to the test coordinator to make sure the end users are always updated on the defects. The presentation will provide the audience with practical advice, examples and templates on how to set up their acceptance testing in a flexible way without drowning in administrative tasks.