To put it in simple terms, a responsive website is one whose appearance is designed to dynamically change in appearance, depending on the screen size and orientation of the device being used to view it.
Responsive websites solve the problem of designing for the multitude of devices available to customers, ranging from tiny phones to huge desktop monitors.
With increasing mobile internet usage, a responsive website is necessary for both users, and businesses.
The Infographic below from MarketPath.com gives a summary of why you need a responsive website.
