Application development and delivery (AD&D) pros make decisions every day on app features and how they work. However, whether those features hit the mark for the majority of users is anybody's guess. Testers validate app functionality prior to release, but it's real user insights into the app that really matter. Crowd testing offers an inexpensive way to gain an outside-in perspective on your app. This report focuses on how AD&D pros use crowd testing providers to deliver the apps that help win, serve, and retain customers.