What it means for a Dubai business
Google-Extended is not a separate crawler. Googlebot still does the crawling. The token is a switch for what Google may do with your content in Gemini. Google says it does not affect your ranking in Search.
It also does not take you out of AI Overviews, which Google treats as part of Search. So for a business that wants to be seen in Google’s AI answers, blocking Google-Extended does little to help or hurt that.
Example
A dental clinic adds User-agent: Google-Extended with Disallow: / because it read that this protects its content. Its pages still rank in Google and can still appear in AI Overviews. What changed is only how Google may use them for Gemini.
Common mistake
Blocking Googlebot itself in the hope of keeping content out of AI. That removes the site from Google Search, which costs far more than it protects.