In short, responsive web design can be defined as one website for multiple screens. What this means is: gone are the days of having to create a separate mobile website. Now you can create a responsive website that will fit all screens on all devices from desktop computers to mobile phones. Responsive websites look better on mobile devices and are thus more user-friendly.
According to Google’s Webmaster Central Blog, “The change will affect mobile searches in all languages worldwide and will have a significant impact in our search results. Consequently, users will find it easier to get relevant, high quality search results that are optimized for their devices.”
If you want to check if your current Website is mobile friendly or responsive check here.
If you need help converting YOUR Website to responsive you can contact me here