Responsive design is an approach to web site design where content renders uniquely based on the type of device that the user is accessing the content from. Essentially the interfaces are “smart” and layouts are modified to display most effectively according to the devices screen size. Unique rules are applied to responsive layouts telling the content and navigation to adjust accordingly based on the size of the device that the customer is using.
A responsive design is an efficient approach to a mobile strategy as it allows the interfaces to be managed in a consolidated fashion across all devices. Whether a user is accessing the site from a full screen computer, a tablet, or a smartphone, one set of files are used to display the content which allows updates to be more effectively implemented across the full spectrum of devices, and also ensures that the page content can be managed in a consolidated fashion vs managing mobile content separately than the full site content.