Direct answer
Next.js is right when the site needs custom routing, reusable components, server-rendered content, metadata control, sitemap and robots routes, schema, performance discipline, and Vercel previews.
The useful version of this topic is practical: it should help a buyer make a better website decision, not just define a term.
Practical framework
Use the framework below to turn the topic into a page, brief, audit, or approval checklist.
- Use Next.js for complex service, SaaS, B2B, or content-heavy sites
- Use it when metadata, sitemap, schema, and routing need control
- Use it when reusable components improve maintainability
- Avoid it for tiny sites where a simple platform is enough
- Define content ownership before custom build starts
Method proof to prepare
When public client proof is not available, method proof can still make the decision inspectable without inventing outcomes, reviews, awards, or rankings.
- Route inventory
- Component model
- Metadata and sitemap plan
- Deployment workflow
- QA checklist