Many people nowadays are searching on Google via their mobile device. Google has started to test its indexing search results for mobile, separately from desktop to offer mobile users a better and fresher content. Google create a separate mobile index that will be the main or “primary” index that the uses of search engine respond to queries. A separate desktop index will be maintained, one that will not be as up-to-date as the mobile index.
With separate indexes for both mobile and desktop search, Google could run search algorithms separately, meaning the search giant would no longer have to use its current method where desktop data is extracted and used to determine mobile rankings. When he announced the news, Gary Illyes said that the mobile index would become primary; this means the desktop index would be less up-to-date.
A small scale of a mobile index already released by Google. While announcing this, Google didn’t give any information regarding on the said matter and leaving the question to many people on how the update currently affects in the mobile-first index. As stated during the announcement, Google confirmed that the index will continue to support desktop-only search indexing for site owners who don’t have mobile sites.
In the Google Webmasters blog, Google said it was just the beginning of the process of moving over to mobile first index, yet it gave webmasters and SEOs a list of recommendations on changes that they should carry out before the full effect of the mobile index comes into place.
Responsive design and dynamic serving mobile sites that are verified with Google and whose primary content and markup are the same for both platforms, it doesn’t require any changes to be made. Visit the blog and take a look at Google’s recommendations.
Until Google officially releases further information on the way that the indexes will work, it is exactly unclear how they will be implemented.
You can read the full blog here.