What this means in practice
HTTP status codes communicate what happened to a URL. Search visibility depends on these signals matching the actual state of the content.
Implementation path
- Use 200 for genuinely successful, indexable content.
- Use permanent redirects for permanent URL moves and avoid long chains.
- Use 404 or 410 when content is intentionally unavailable without a relevant replacement.
- Investigate 5xx errors quickly because repeated server failures can prevent reliable crawling and user access.
What good looks like
A strong implementation makes the intended behavior obvious to a visitor, a crawler, and a machine reader. It has one clear purpose, uses consistent signals, and does not rely on hidden assumptions.