How this page was written. Researched and drafted by the RankMont strategy team, reviewed by a named editor before publication, and fact-checked against primary sources — Google Search Central documentation, Google’s Search Status Dashboard, and the named studies cited beside each figure. We use AI tools for research and first drafts, as every serious agency now does; nothing is published without a human rewriting it and an editor signing off. The full editorial and AI-use policy is at /editorial-policy/. Last reviewed 16 September 2026.