QA will add lots useful to associate an agile team due to the various mindsets. Testers will and will admit the various doable situations to check a story.
But the foremost vital plus that they will bring is:
To forestall defect: QA ought to advocate best practices on the thanks to forestalling defects from getting into the system within the 1st place.
To offer quick feedback: it’s vital for developers to grasp if the new practicality works evidently and if regression tests pass, and that they would like that feedback quite quickly. QA ought to offer the results of the tests to developers as shortly as doable.