Definition: A bug heat map is a visual showing where in a product bugs are being found, with busier areas highlighted. It is often updated live during a bug hunt or testing session.
So what? A heat map shows clusters of problems at a glance and helps a team decide where to look harder. It also exposes areas with few bugs, which may mean good quality or simply little testing.
Examples: Projecting a heat map of bugs by product area during a bug hunt. Reviewing a heat map after a release to see which features caused the most issues.
