Clear definitions of the metrics, concepts, and signals that impact site speed, search rankings, user behavior, and revenue.
Checkout Friction refers to any obstacle, delay, or confusion that makes it harder for a user to complete a purchase during the checkout process. Even small issues-like slow-loading steps, unnecessary form fields, or unclear errors-can interrupt purchase intent and cause motivated buyers to abandon before finishing their order.
Learn moreLab Data (Synthetic Monitoring) and Field Data (Real User Monitoring) represent the two fundamental ways to measure website performance, each serving a distinct but complementary purpose.
Learn morePerceived Load Speed (PLS) is a subjective measure of how fast a website feels to a user, which is often more critical for retention than the actual technical load time.
Learn moreProduct Discovery is the process by which users find relevant products on an ecommerce site through navigation, search, filters, and recommendations. When discovery works well, users quickly reach products that match their intent; when it fails, even high-intent visitors leave without ever viewing the items they came for.
Learn moreRevenue Per Visitor (RPV) measures how much revenue, on average, each visit to your website generates. It combines conversion rate and average order value into a single metric, showing how effectively your site turns traffic into actual revenue.
Learn moreTime to First Byte (TTFB) is a performance metric that shows how quickly your server starts responding after a browser makes a request.
Learn moreUser Frustration Signals are the digital body language of a website visitor. They are measurable behavioral cues that occur when a site fails to respond as intended.
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