I recall reading Next docs and stumbling across features that are Vercel-only (like something about responsive images IIRC). Vercel being apparently their commercial thing, it put me off.
Shouldn't be (I'm on the team). All Next.js features work out of the box when using `next start`, either when deployed self-hosted (like a Node.js server or a Dockerfile), or when deploying to a platform like Vercel. We have documentation and examples for both types. This includes the image component, which automatically optimizes images for you.
