What are Versioned Docs and why use them?

Versioned Docs are documentation pages that preserve information for specific product, API, or platform versions. They are important for AI search because assistants may answer technical prompts using outdated documentation if versions are unclear. Versioning helps both humans and AI systems understand which instructions apply to which release, reducing hallucinated or incorrect guidance. Strong versioned docs include clear version labels, canonical links, last-updated dates, migration notes, changelogs, and internal links to current documentation. For GEO, versioned docs can become high-trust citation sources when AI assistants answer implementation questions about your product or technical category.