Core Web Vitals are measurements used by search engines to check user experience on a site. They look at loading speed, how fast the page becomes usable, and how stable the layout is. For an affiliate site, this matters because visitors need to trust and read your content before clicking product links. If the page shifts or loads slowly, people leave. Improving image size and reducing heavy scripts can help. Better user experience can support rankings over time. Should affiliate marketers focus more on content or site performance?