
The update will reward mobile-friendly responsive websites.
When designing your website in accordance to this new mobile-friendly update, make sure you do a little research (using Google Analytics data Mobile > Devices report, with ‘Screen Resolution’ set as a secondary dimension) on your website traffic characteristics. Instead of serving everyone, find out which screen sizes people usually use on your website and design accordingly.
Responsive design is the idea that you can deliver website content regardless of screen size.