Developer productivity can be defined differently by managers and developers. For managers, productivity focuses on efficiently completing work to a high quality standard. Developers define productivity as the impact of their work, achieving sprint goals, time spent working, and how engaged and learning they feel. There is no single way to universally measure productivity, as it is a complex concept with many variables. A proposed framework called SPACE considers satisfaction, performance, activity, communication/collaboration, and efficiency/flow. While some metrics exist, they may not capture what is most important. Instead, understanding developer experience through factors like development processes, product management, collaboration culture, and fulfillment may be a better way to improve productivity.