A dynamic or responsive site is one that renders clearly on all standard display sizes. A page will look good on your phone screen and on your desktop computer screen.
Some companies with large budgets like Facebook actually code two separate websites. You can tell the mobile version by the “m” in the URL the browser displays.
Google makes it clear that it penalises sites that aren’t responsive. It is all about user experience and your site should display properly on all platforms. Luckily, we know how to do this with HTML and CSS. WordPress templates are also built with this in mind so you don’t have to worry about it.
