SEO, presentation, themes, they all depend on an understanding of who visits your site and what they use to view your site. This module gives you a look at what they use to view your site.
Site owners and developers dive into complicated approaches to presenting sites on different browsers and multiple device formats without knowing exactly what is used on their site. SEO can suffer due to overly complex changes.
Google now tests sites for responsive design. Responsive design is now one of the top three SEO priorities.