Google has confirmed that it is testing the new IndexNow protocol that was headed by Microsoft Bing and launched a few weeks ago. Basically, IndexNow lets site owners ping a URL to achieve instant indexing with participating search engines (Bing and Yandex, for now). It allows website owners to instantly inform search engines about content that has been added, updated, or deleted - allowing search engines to quickly reflect this change in their search results. According to Google, they are testing, but do not have plans to implement anytime soon. Bing, however, spearheaded the projected and has fully embraced it.
Drop dead simple to use >>> to submit a URL using an HTTP request (replace with the URL provided by the search engine), issue your request to the following URL: https:///indexnow?url=url-changed&key=your-key
More information: https://www.indexnow.org