Impact metrics measure how much an IT professional contributes to the strategic and operational objectives of your organization, such as the revenue, growth, or market share generated by their output, the customer retention, loyalty, or referrals achieved by their service, or the innovation, differentiation, or competitive advantage created by their work. These metrics can help you align IT projects with your business goals and vision, demonstrate the value and relevance of IT professionals to your stakeholders, and motivate and inspire them to achieve excellence. However, impact metrics should not be used to ignore or neglect the productivity, quality, or efficiency of IT professionals, as they may create unrealistic or unsustainable expectations. You should also acknowledge and appreciate the efforts and challenges of IT professionals, and provide them with opportunities and incentives to grow and develop.