A KPI, Key Performance Indicator, is a specific, measurable value used to track how effectively a website, campaign, or business is achieving its actual goals. Choosing the right KPIs keeps effort focused on what genuinely matters, rather than getting lost in numbers that look impressive but don't actually reflect success.
Common Website KPIs
- Conversion rate — the percentage of visitors completing a desired action
- Organic traffic — visitors arriving through unpaid search results
- Bounce rate — the share of visitors leaving after viewing only one page
- Average session duration — how long visitors typically stay on a site
- Customer acquisition cost — the total cost of acquiring a single new customer
Choosing the Right KPIs
- Tie each KPI directly to a specific, genuine business goal
- Keep the total number of tracked KPIs manageable — a handful of meaningful ones beats dozens of vague ones
- Make sure each one is genuinely measurable with the tools already available
- Review them regularly, and adjust as goals and priorities evolve
A Simple Way to Think About It
A blog focused purely on ad revenue should probably be tracking pageviews and RPM closely; an eCommerce store should be watching conversion rate and average order value far more closely than raw traffic alone. The right KPI depends entirely on what a specific site is actually trying to achieve.
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