Speed is useless without collecting metrics that matter- metrics that are measurable and actionable. Quantitative metrics such as changes in revenue tell you that something is happening and changes in qualitative metrics tell you why something is happening. What is happening detects and diagnoses product problems that can relate to customer satisfaction, popularity of new and old features, changes in market needs or new competitors. The “why” looks behind customer requests or customer loss. These can uncover product gaps or the larger needs of your customers. Choosing the right metrics can tell you commercial success, how to attract new customers, how to keep existing customers and get ideas for new features or products.