What this means in practice
Crawling is the retrieval stage: search systems request resources, follow discoverable paths, and decide what to process further. A page cannot be evaluated if it cannot be reached reliably.
Implementation path
- Make important URLs discoverable through internal links and an accurate XML sitemap.
- Check robots.txt, authentication, server errors, redirects, and JavaScript behavior for crawl barriers.
- Keep navigation and URL patterns predictable so crawlers can move through the site efficiently.
- Validate important templates with rendered HTML and request-level tests, not only by looking at the browser.
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.