Automating Mobile First Indexing controls for your websites.
Around the web
Rolling out mobile-first indexingToday we're announcing that after a year and a half of careful experimentation and testing, we've started migrating sites that follow the best practices for mobile-first indexing. To recap, our crawling, indexing, and ranking systems have typically used the desktop version of a page's content, which may cause issues for mobile searchers when that version is vastly different from the mobile version.
Official Google Webmaster Central Blog