Bug counts and trends don't cover all the quality aspects of a product. A good exit criteria list provides an orderly list of attributes that research and experience showed to have impact on product quality, so you can monitor the product quality at any given time and forecast the expected status at release. That's how you improve your product.
How do you know when you're finished testing? How do you know when the product is ready to ship? Sometimes the decision to stop testing and release a product seems as if someone's making deals in a smoke-filled room, or that there are rules of the game of which we are unaware. At times, these rules seem completely arbitrary. Instead of arbitrary decisions, it is possible to come to an agreement about when the product is ready to release, and even when it's time to stop testing. In this presentation, learn how to define release criteria, and then use those criteria to decide when to release the product.