To design a dashboard to track sales performance, I would first gather requirements from stakeholders to understand their needs and what type of data and insights they are interested in. I would then work with the IT team to identify the relevant data sources and determine how to extract and integrate the data into the dashboard. Once the data is in place, I would use data visualization software, such as Tableau or Power BI, to design the dashboard, ensuring that it is visually appealing and easy to use. I would also consider adding interactive features, such as filters and drilldowns, to enable users to customize and explore the data in more detail. Finally, I would test the dashboard to ensure that it is functioning correctly and meets the needs of the stakeholders.