Plain React handles the UI layer; it doesn't ship routing, server rendering, or an API layer. Most real products need all three, which means a plain-React project ends up hand-assembling them from separate libraries — more decisions, more integration risk, more to maintain.
What Next.js gives you by default
- Server rendering — pages that are fast and indexable by search engines on first load, not after a client-side fetch.
- File-based routing and API routes — one framework instead of a router library plus a separate backend for simple endpoints.
- Built-in image and font optimization — performance work you'd otherwise configure by hand.
Where it matters most
Anything public-facing where search visibility or load speed affects the business — marketing sites, e-commerce, content platforms. This site is itself built on Next.js, for exactly that reason. See our web development service for scope and pricing.