Answer
Prefetch is a resource hint for a resource that may be needed by a future navigation. • It uses `<link rel="prefetch" href="...">`. • The browser decides whether and when to perform the low-priority fetch. • Do not use prefetch for resources required immediately by the current page.
💡 Simple Example
<head><link rel="prefetch" href="/next-lesson.html"></head>
⚡ Quick Revision
Prefetch suggests a likely future resource, while preload targets the current page.