Crowdsourced Testing

A testing approach in which a product is made available to a distributed group of external testers, typically via a third-party platform, who test it on their own real devices across a range of environments, locations, and configurations. It is particularly useful when an internal team lacks the device coverage, time, or diversity of perspective needed to validate a product thoroughly. Third-party providers manage the tester community and deliver a consolidated report of findings. 

For example: a startup without a device lab using a crowdtesting platform to validate a mobile app across dozens of Android and iOS versions before launch; or a company hiring a crowd of real users to explore a new feature for edge cases their own team would never think to try.