Start with decisions, not data
The first question is not "what data do we have?" It is "what decisions do we need to make faster?" A dashboard that shows every metric available is a dashboard nobody reads. Focus on the five to seven numbers that actually change how your team operates.
Edward Tufte, the pioneer of data visualization, advocated for what he called "data ink ratio." Every element on a dashboard should communicate useful information. Decorative charts and redundant labels reduce clarity.
- Identify key decisions first
- Limit to 5 to 7 core metrics
- Remove decorative elements
- Design for daily use