Conversion Rate Optimization
Conversion rate optimization terms for improving website performance, A/B testing, user experience, and checkout optimization.
The metrics that decide whether your brand scales.
Conversion rate optimization is where most teams overinvest in the wrong things. They A/B test button colors while their checkout has a 60-second load time and three forced account-creation gates. The terms here are how operators separate signal from noise.
Statistical significance, sample size, sequential testing, holdouts, lift, friction analysis — every term in this category exists to prevent the most common CRO mistake: declaring a winner from a test that was not powered to show one. Knowing the math protects you from your own optimism.
If you're running tests in Shopify, Convert, or VWO, or auditing why your conversion rate has been flat for six months, this is the language to think clearly with.
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Showing 14 of 14 terms in Conversion Rate Optimization
A/B Test
A controlled experiment comparing two versions to determine which performs better.
Multivariate Test
Testing multiple elements simultaneously to understand how different combinations interact.
Statistical Significance
The probability that observed differences between variants are real rather than random chance.
Sample Size
The number of visitors or conversions needed to reach statistical significance.
Hero Section
The large, prominent area at the top of a page featuring main value proposition and CTA.
Above the Fold
Content visible without scrolling when a page loads.
Call-to-Action
CTAA button, link, or prompt encouraging users to take a specific action.
Value Proposition
A clear statement explaining why customers should buy from you.
Social Proof
Evidence that others trust and value your brand—reviews, testimonials, trust badges.
Trust Badges
Visual indicators of security and credibility—payment logos, certifications, guarantees.
Exit Intent
Technology detecting when a user is about to leave the page to trigger retention messaging.
Popup / Modal
An overlay appearing on top of page content for email capture, promotions, or announcements.
Page Speed
How quickly pages load. Each additional second decreases conversions by approximately 7%.
Core Web Vitals
Google's metrics for page experience: LCP (loading), FID (interactivity), CLS (visual stability).
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