How long will testing take? Estimating testing effort and duration is a common challenge on projects small, medium, and large. In this session, Rex will cover techniques that work in both traditional and agile lifecycles. How many testers do we need? How many test cases do we need? How many bugs will testing find? How long will testing take? Those are good questions, but those questions are often hard to answer. In this keynote, drawn from three decades of industry experience and materials in his best-selling book Managing the Testing Process, 3rd edition, Rex will discuss fundamental techniques for test estimation.