You've just finished your software release. You have signed off, and it's been shipped. You’re done, right? No! The moment a project ends is the perfect time to reflect on the entire project to see what there is to learn—it's the unique moment when the project can be seen in its entirety. It’s also a perfect moment because the end of your project forecasts the beginning of a new project in the not-too-distant future, which you can improve by applying what you’ve learned from this project. You can look at completing the project as having “paid your tuition.” So now what are you going to learn from it?

A QA manager is often faced with measuring the impossible. Here is a simple, post-ship metric to help judge the test effort's effectiveness. The Quality Barometer method uses the bug counts found during testing, calculates a percentage, and then uses that percentage as the defect target number that can be tolerated after shipment.