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GLOSSARY

Key Performance Indicator (KPI)

UX Design

What is a KPI?

A Key Performance Indicator (KPI) in UX design is a measurable value that demonstrates how effectively a design achieves key user experience objectives. These metrics help track, analyze, and optimize the performance of user interfaces and digital products.

Why are KPIs Important?

KPIs provide objective data to measure design success, justify design decisions, and identify areas for improvement. They help teams focus on user-centered goals and demonstrate the business value of UX improvements.

When to Use KPIs

Use KPIs throughout the design process: during initial research to establish baselines, during implementation to track progress, and after launch to measure success. They're essential for A/B testing, usability improvements, and demonstrating ROI of design changes.

How to Define UX KPIs

Select metrics that align with both user needs and business goals. Focus on measurable indicators like task success rate, time-on-task, error rate, user satisfaction scores (CSAT, NPS), and conversion rates. Establish clear benchmarks and regular measurement intervals.

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