The next step is to choose relevant metrics that can capture the progress and results of your R&D activities. Metrics are quantitative or qualitative indicators that can help you monitor, compare, and communicate your R&D performance and impact. However, not all metrics are equally useful or appropriate for your R&D goals, so you should select metrics that are relevant, reliable, valid, and feasible. Examples of common R&D metrics include input metrics, which measure the resources and efforts invested in R&D such as spending, staff, time, and patents; output metrics, which measure the outputs and outcomes generated by R&D such as products, features, markets, revenues and customer satisfaction; efficiency metrics which measure the ratio of outputs to inputs like return on investment, productivity, profitability and quality; and impact metrics which measure the long-term effects and benefits of R&D such as market share, competitive advantage, social value and environmental sustainability.