From Facebook to Slack, Keith Adams has spent his life building and leading some of the most adored software on the planet. He suggests that, all too often, we view the quality of the software as something ineffable, subjective, and unmeasurable. Keith proposes a different approach – a unified metric for the quality of a product that spans performance, freedom from defects, and reliability. This way, companies can prioritize UX issues to fix and build better products, faster.