User Experience (UX)
noun

Definition:
The overall experience a visitor has while interacting with a website or digital product, encompassing usability, accessibility, speed, design, and emotional response. Good UX supports SEO by reducing bounce rate, improving engagement, and increasing conversions.

Usage:
“The redesign improved UX by simplifying the checkout process and improving mobile navigation.”

Compare:
UI (User Interface), Core Web Vitals, behavioral signals