An open way to tell participating search engines the moment a page is added or changed.
Instead of waiting for a crawler to come back, your site sends a short message listing the changed addresses. Bing, Yandex, Seznam, Naver and Yep are among the participating search engines; Google is not.
Because Microsoft Copilot answers from Bing's web results, a fast update in Bing can also reach Copilot sooner.