A conversion is any completed action a visitor takes that you've defined as valuable — buying a product, submitting a lead form, booking a call, or subscribing. It's the moment traffic turns into a business outcome, and it's how you measure whether the visits you worked to earn were actually worth earning.
Not every conversion is a sale. A macro conversion is the primary goal — a purchase or qualified lead. A micro conversion is a smaller step that signals intent, such as downloading a guide, adding to cart, or watching a demo. Tracking both tells you where people commit and, just as usefully, where they stall.
Conversion rate = conversions ÷ visitors × 100. If 5,000 people visit a landing page in a month and 150 request a quote, that's a 3% conversion rate. Nudging it to 3.6% — through a clearer call to action and a faster load — yields 30 extra leads from the same traffic. That's usually cheaper than doubling visits.
Ranking for a keyword that never converts is a vanity win. Effective SEO targets queries with buyer intent and lands them on pages built to act on that intent, backed by a strong user experience: