Happy to Announce the Release of Search Engine Ranking Factors 2015 by +Mozhttps://moz.com/blog/ranking-factors-2015
I'm excited to announce the results of Moz's biannual Search Engine Ranking Correlation Study and Expert Survey, a.k.a. Ranking Factors.
This is the largest study of this kind we've ever undertaken, including our Expert Survey of over 150 professional search marketers, and a ranking correlation survey of over 17,000 keywords.
In addition to the classic signals we've studied in the past, this time we worked with 3 data partners including +SimilarWeb +Ahrefs
to study additional correlations.
The Expert Survey also includes valuable insight into Google's broad algorithm, negative ranking factors, and the future of search.
Take a look, let us know what you think! https://moz.com/blog/ranking-factors-2015