This answer is the main reason to begin with 3-5 key metrics during the program development process, as it can help to align the privacy program with the organization's vision, mission and goals, and to measure the progress and performance of the program against these objectives. Key metrics are indicators that reflect the most important or critical aspects of the privacy program, such as compliance, risk, maturity, effectiveness or value. By starting with a small number of key metrics, the program development process can avoid being overwhelmed or distracted by too many or irrelevant data points, and can prioritize and concentrate on the areas that matter most for the organization.